diff --git a/src/test/ui/issues/issue-56199.rs b/src/test/ui/issues/issue-56199.rs
index bbd51823cf1af..83d4e31b5d126 100644
--- a/src/test/ui/issues/issue-56199.rs
+++ b/src/test/ui/issues/issue-56199.rs
@@ -5,18 +5,18 @@ struct Bar {}
 impl Foo {
     fn foo() {
         let _ = Self;
-        //~^ ERROR the `Self` constructor can only be used with tuple structs
+        //~^ ERROR the `Self` constructor can only be used with tuple or unit structs
         let _ = Self();
-        //~^ ERROR the `Self` constructor can only be used with tuple structs
+        //~^ ERROR the `Self` constructor can only be used with tuple or unit structs
     }
 }
 
 impl Bar {
     fn bar() {
         let _ = Self;
-        //~^ ERROR the `Self` constructor can only be used with tuple structs
+        //~^ ERROR the `Self` constructor can only be used with tuple or unit structs
         let _ = Self();
-        //~^ ERROR the `Self` constructor can only be used with tuple structs
+        //~^ ERROR the `Self` constructor can only be used with tuple or unit structs
     }
 }
 
diff --git a/src/test/ui/issues/issue-56199.stderr b/src/test/ui/issues/issue-56199.stderr
index feb88e926b2d8..6e3c7fd17b437 100644
--- a/src/test/ui/issues/issue-56199.stderr
+++ b/src/test/ui/issues/issue-56199.stderr
@@ -1,4 +1,4 @@
-error: the `Self` constructor can only be used with tuple structs
+error: the `Self` constructor can only be used with tuple or unit structs
   --> $DIR/issue-56199.rs:7:17
    |
 LL |         let _ = Self;
@@ -6,7 +6,7 @@ LL |         let _ = Self;
    |
    = note: did you mean to use one of the enum's variants?
 
-error: the `Self` constructor can only be used with tuple structs
+error: the `Self` constructor can only be used with tuple or unit structs
   --> $DIR/issue-56199.rs:9:17
    |
 LL |         let _ = Self();
@@ -14,13 +14,13 @@ LL |         let _ = Self();
    |
    = note: did you mean to use one of the enum's variants?
 
-error: the `Self` constructor can only be used with tuple structs
+error: the `Self` constructor can only be used with tuple or unit structs
   --> $DIR/issue-56199.rs:16:17
    |
 LL |         let _ = Self;
    |                 ^^^^ did you mean `Self { /* fields */ }`?
 
-error: the `Self` constructor can only be used with tuple structs
+error: the `Self` constructor can only be used with tuple or unit structs
   --> $DIR/issue-56199.rs:18:17
    |
 LL |         let _ = Self();
diff --git a/src/test/ui/issues/issue-56835.rs b/src/test/ui/issues/issue-56835.rs
index 0b3a665ccf9fd..c16550e370179 100644
--- a/src/test/ui/issues/issue-56835.rs
+++ b/src/test/ui/issues/issue-56835.rs
@@ -3,7 +3,7 @@ pub struct Foo {}
 
 impl Foo {
     fn bar(Self(foo): Self) {}
-    //~^ ERROR the `Self` constructor can only be used with tuple structs
+    //~^ ERROR the `Self` constructor can only be used with tuple or unit structs
     //~^^ ERROR expected tuple struct/variant, found self constructor `Self` [E0164]
 }
 
diff --git a/src/test/ui/issues/issue-56835.stderr b/src/test/ui/issues/issue-56835.stderr
index 32bbc49ffd991..b7c3b142ec452 100644
--- a/src/test/ui/issues/issue-56835.stderr
+++ b/src/test/ui/issues/issue-56835.stderr
@@ -1,4 +1,4 @@
-error: the `Self` constructor can only be used with tuple structs
+error: the `Self` constructor can only be used with tuple or unit structs
   --> $DIR/issue-56835.rs:5:12
    |
 LL |     fn bar(Self(foo): Self) {}