diff --git a/src/test/ui/issues/issue-45730.stderr b/src/test/ui/issues/issue-45730.stderr
index 4fc1e3835f7ad..3c400d6eefaa8 100644
--- a/src/test/ui/issues/issue-45730.stderr
+++ b/src/test/ui/issues/issue-45730.stderr
@@ -30,3 +30,4 @@ LL |     let x = 0 as *const i32 as *const _ as *mut _;
 
 error: aborting due to 3 previous errors
 
+For more information about this error, try `rustc --explain E0641`.
diff --git a/src/test/ui/order-dependent-cast-inference.stderr b/src/test/ui/order-dependent-cast-inference.stderr
index 01e59f8f022fd..081038c573acf 100644
--- a/src/test/ui/order-dependent-cast-inference.stderr
+++ b/src/test/ui/order-dependent-cast-inference.stderr
@@ -10,3 +10,4 @@ LL |     let mut y = 0 as *const _;
 
 error: aborting due to previous error
 
+For more information about this error, try `rustc --explain E0641`.