diff --git a/crates/libs/bindgen/src/rust/delegates.rs b/crates/libs/bindgen/src/rust/delegates.rs
index 40d952037e..bcb7bcdf87 100644
--- a/crates/libs/bindgen/src/rust/delegates.rs
+++ b/crates/libs/bindgen/src/rust/delegates.rs
@@ -102,12 +102,12 @@ fn gen_win_delegate(writer: &Writer, def: TypeDef) -> TokenStream {
                 Invoke: Self::Invoke,
                 #(#named_phantoms)*
             };
-            unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: &::windows_core::GUID, interface: *mut *const ::core::ffi::c_void) -> ::windows_core::HRESULT {
+            unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
                 let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
 
-                *interface = if iid == &<#ident as ::windows_core::ComInterface>::IID ||
-                    iid == &<::windows_core::IUnknown as ::windows_core::ComInterface>::IID ||
-                    iid == &<::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID {
+                *interface = if *iid == <#ident as ::windows_core::ComInterface>::IID ||
+                    *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID ||
+                    *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID {
                         &mut (*this).vtable as *mut _ as _
                     } else {
                         ::core::ptr::null_mut()
diff --git a/crates/libs/bindgen/src/rust/implements.rs b/crates/libs/bindgen/src/rust/implements.rs
index 742ae99842..f4a0b4b794 100644
--- a/crates/libs/bindgen/src/rust/implements.rs
+++ b/crates/libs/bindgen/src/rust/implements.rs
@@ -28,7 +28,7 @@ pub fn writer(writer: &Writer, def: TypeDef) -> TokenStream {
         }
     }
 
-    let mut matches = quote! { iid == &<#type_ident as ::windows_core::ComInterface>::IID };
+    let mut matches = quote! { *iid == <#type_ident as ::windows_core::ComInterface>::IID };
 
     if let Some(Type::TypeDef(def, _)) = vtables.last() {
         requires.combine(&gen_required_trait(writer, *def, &[]))
@@ -39,7 +39,7 @@ pub fn writer(writer: &Writer, def: TypeDef) -> TokenStream {
             let name = writer.type_def_name(*def, generics);
 
             matches.combine(&quote! {
-                || iid == &<#name as ::windows_core::ComInterface>::IID
+                || *iid == <#name as ::windows_core::ComInterface>::IID
             })
         }
     }
@@ -142,7 +142,7 @@ pub fn writer(writer: &Writer, def: TypeDef) -> TokenStream {
                         #(#named_phantoms)*
                     }
                 }
-                pub fn matches(iid: &::windows_core::GUID) -> bool {
+                pub unsafe fn matches(iid: *const ::windows_core::GUID) -> bool {
                     #matches
                 }
             }
diff --git a/crates/libs/core/src/com_interface.rs b/crates/libs/core/src/com_interface.rs
index 5eae5a1e9c..5259238b9e 100644
--- a/crates/libs/core/src/com_interface.rs
+++ b/crates/libs/core/src/com_interface.rs
@@ -43,9 +43,8 @@ pub unsafe trait ComInterface: Interface + Clone {
     ///
     /// # Safety
     ///
-    /// `interface` must be a non-null, valid pointer for writing an interface pointer
-    #[doc(hidden)]
-    unsafe fn query(&self, iid: &GUID, interface: *mut *const std::ffi::c_void) -> HRESULT {
+    /// `interface` must be a non-null, valid pointer for writing an interface pointer.
+    unsafe fn query(&self, iid: *const GUID, interface: *mut *mut std::ffi::c_void) -> HRESULT {
         (self.assume_vtable::<IUnknown>().QueryInterface)(self.as_raw(), iid, interface)
     }
 }
diff --git a/crates/libs/core/src/imp/weak_ref_count.rs b/crates/libs/core/src/imp/weak_ref_count.rs
index 2f28e7f97b..ee46a6bc33 100644
--- a/crates/libs/core/src/imp/weak_ref_count.rs
+++ b/crates/libs/core/src/imp/weak_ref_count.rs
@@ -32,8 +32,8 @@ impl WeakRefCount {
     }
 
     /// # Safety
-    pub unsafe fn query(&self, iid: &crate::GUID, object: *mut std::ffi::c_void) -> *mut std::ffi::c_void {
-        if iid != &IWeakReferenceSource::IID {
+    pub unsafe fn query(&self, iid: *const crate::GUID, object: *mut std::ffi::c_void) -> *mut std::ffi::c_void {
+        if *iid != IWeakReferenceSource::IID {
             return std::ptr::null_mut();
         }
 
@@ -119,16 +119,16 @@ impl TearOff {
         std::mem::transmute(value << 1)
     }
 
-    unsafe fn query_interface(&self, iid: &crate::GUID, interface: *mut *const std::ffi::c_void) -> crate::HRESULT {
+    unsafe fn query_interface(&self, iid: *const crate::GUID, interface: *mut *mut std::ffi::c_void) -> crate::HRESULT {
         ((*(*(self.object as *mut *mut crate::IUnknown_Vtbl))).QueryInterface)(self.object, iid, interface)
     }
 
-    unsafe extern "system" fn StrongQueryInterface(ptr: *mut std::ffi::c_void, iid: &crate::GUID, interface: *mut *const std::ffi::c_void) -> crate::HRESULT {
+    unsafe extern "system" fn StrongQueryInterface(ptr: *mut std::ffi::c_void, iid: *const crate::GUID, interface: *mut *mut std::ffi::c_void) -> crate::HRESULT {
         let this = Self::from_strong_ptr(ptr);
 
         // Only directly respond to queries for the the tear-off's strong interface. This is
         // effectively a self-query.
-        if iid == &IWeakReferenceSource::IID {
+        if *iid == IWeakReferenceSource::IID {
             *interface = ptr;
             this.strong_count.add_ref();
             return crate::HRESULT(0);
@@ -139,14 +139,14 @@ impl TearOff {
         this.query_interface(iid, interface)
     }
 
-    unsafe extern "system" fn WeakQueryInterface(ptr: *mut std::ffi::c_void, iid: &crate::GUID, interface: *mut *const std::ffi::c_void) -> crate::HRESULT {
+    unsafe extern "system" fn WeakQueryInterface(ptr: *mut std::ffi::c_void, iid: *const crate::GUID, interface: *mut *mut std::ffi::c_void) -> crate::HRESULT {
         let this = Self::from_weak_ptr(ptr);
 
         // While the weak vtable is packed into the same allocation as the strong vtable and
         // tear-off, it represents a distinct COM identity and thus does not share or delegate to
         // the object.
 
-        *interface = if iid == &IWeakReference::IID || iid == &crate::IUnknown::IID || iid == &IAgileObject::IID { ptr } else { std::ptr::null_mut() };
+        *interface = if *iid == IWeakReference::IID || *iid == crate::IUnknown::IID || *iid == IAgileObject::IID { ptr } else { std::ptr::null_mut() };
 
         // TODO: implement IMarshal
 
@@ -218,7 +218,7 @@ impl TearOff {
             })
             .map(|_| {
                 // Let the object respond to the upgrade query.
-                let result = this.query_interface(&*iid, interface as *mut _);
+                let result = this.query_interface(iid, interface);
                 // Decrement the temporary reference account used to stabilize the object.
                 this.strong_count.0.fetch_sub(1, Ordering::Relaxed);
                 // Return the result of the query.
diff --git a/crates/libs/core/src/unknown.rs b/crates/libs/core/src/unknown.rs
index a9374c830f..3d3e6d92e6 100644
--- a/crates/libs/core/src/unknown.rs
+++ b/crates/libs/core/src/unknown.rs
@@ -10,7 +10,7 @@ pub struct IUnknown(std::ptr::NonNull<std::ffi::c_void>);
 #[doc(hidden)]
 #[repr(C)]
 pub struct IUnknown_Vtbl {
-    pub QueryInterface: unsafe extern "system" fn(this: *mut std::ffi::c_void, iid: &GUID, interface: *mut *const std::ffi::c_void) -> HRESULT,
+    pub QueryInterface: unsafe extern "system" fn(this: *mut std::ffi::c_void, iid: *const GUID, interface: *mut *mut std::ffi::c_void) -> HRESULT,
     pub AddRef: unsafe extern "system" fn(this: *mut std::ffi::c_void) -> u32,
     pub Release: unsafe extern "system" fn(this: *mut std::ffi::c_void) -> u32,
 }
@@ -71,7 +71,7 @@ pub trait IUnknownImpl {
     ///
     /// This function is safe to call as long as the interface pointer is non-null and valid for writes
     /// of an interface pointer.
-    unsafe fn QueryInterface(&self, iid: &GUID, interface: *mut *const std::ffi::c_void) -> HRESULT;
+    unsafe fn QueryInterface(&self, iid: *const GUID, interface: *mut *mut std::ffi::c_void) -> HRESULT;
     /// Increments the reference count of the interface
     fn AddRef(&self) -> u32;
     /// Decrements the reference count causing the interface's memory to be freed when the count is 0
@@ -86,7 +86,7 @@ pub trait IUnknownImpl {
 #[cfg(feature = "implement")]
 impl IUnknown_Vtbl {
     pub const fn new<T: IUnknownImpl, const OFFSET: isize>() -> Self {
-        unsafe extern "system" fn QueryInterface<T: IUnknownImpl, const OFFSET: isize>(this: *mut std::ffi::c_void, iid: &GUID, interface: *mut *const std::ffi::c_void) -> HRESULT {
+        unsafe extern "system" fn QueryInterface<T: IUnknownImpl, const OFFSET: isize>(this: *mut std::ffi::c_void, iid: *const GUID, interface: *mut *mut std::ffi::c_void) -> HRESULT {
             let this = (this as *mut *mut std::ffi::c_void).offset(OFFSET) as *mut T;
             (*this).QueryInterface(iid, interface)
         }
diff --git a/crates/libs/implement/src/lib.rs b/crates/libs/implement/src/lib.rs
index e54e573663..e26f8fc5a2 100644
--- a/crates/libs/implement/src/lib.rs
+++ b/crates/libs/implement/src/lib.rs
@@ -45,7 +45,7 @@ pub fn implement(attributes: proc_macro::TokenStream, original_type: proc_macro:
         let offset = proc_macro2::Literal::usize_unsuffixed(count);
         quote! {
             else if #vtbl_ident::matches(iid) {
-                &self.vtables.#offset as *const _ as *const _
+                &self.vtables.#offset as *const _ as *mut _
             }
         }
     });
@@ -104,12 +104,12 @@ pub fn implement(attributes: proc_macro::TokenStream, original_type: proc_macro:
             fn get_impl(&self) -> &Self::Impl {
                 &self.this
             }
-            unsafe fn QueryInterface(&self, iid: &::windows::core::GUID, interface: *mut *const ::core::ffi::c_void) -> ::windows::core::HRESULT {
+            unsafe fn QueryInterface(&self, iid: *const ::windows::core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows::core::HRESULT {
                 unsafe {
-                    *interface = if iid == &<::windows::core::IUnknown as ::windows::core::ComInterface>::IID
-                        || iid == &<::windows::core::IInspectable as ::windows::core::ComInterface>::IID
-                        || iid == &<::windows::core::imp::IAgileObject as ::windows::core::ComInterface>::IID {
-                            &self.identity as *const _ as *const _
+                    *interface = if *iid == <::windows::core::IUnknown as ::windows::core::ComInterface>::IID
+                        || *iid == <::windows::core::IInspectable as ::windows::core::ComInterface>::IID
+                        || *iid == <::windows::core::imp::IAgileObject as ::windows::core::ComInterface>::IID {
+                            &self.identity as *const _ as *mut _
                     } #(#queries)* else {
                         ::core::ptr::null_mut()
                     };
diff --git a/crates/libs/interface/src/lib.rs b/crates/libs/interface/src/lib.rs
index 4d1b7f11bf..329740c387 100644
--- a/crates/libs/interface/src/lib.rs
+++ b/crates/libs/interface/src/lib.rs
@@ -244,8 +244,8 @@ impl Interface {
                         Self { base__: #parent_vtable::new::<#parent_vtable_generics>(), #(#entries),* }
                     }
 
-                    pub fn matches(iid: &windows::core::GUID) -> bool {
-                        iid == &<#name as ::windows::core::ComInterface>::IID
+                    pub unsafe fn matches(iid: *const windows::core::GUID) -> bool {
+                        *iid == <#name as ::windows::core::ComInterface>::IID
                     }
                 }
             }