diff --git a/gcc/rust/typecheck/rust-hir-inherent-impl-overlap.h b/gcc/rust/typecheck/rust-hir-inherent-impl-overlap.h
index b0116e56dcbd..2641ecf7ba8b 100644
--- a/gcc/rust/typecheck/rust-hir-inherent-impl-overlap.h
+++ b/gcc/rust/typecheck/rust-hir-inherent-impl-overlap.h
@@ -129,8 +129,11 @@ class OverlappingImplItemPass : public TypeCheckBase
 			   const std::string &name)
   {
     rich_location r (line_table, dup->get_locus ());
+    std::string msg = "duplicate definitions for " + name;
+    r.add_fixit_replace (query->get_locus (), msg.c_str ());
     r.add_range (query->get_locus ());
-    rust_error_at (r, "duplicate definitions with name %s", name.c_str ());
+    rust_error_at (r, ErrorCode::E0592, "duplicate definitions with name %qs",
+		   name.c_str ());
   }
 
 private:
diff --git a/gcc/rust/typecheck/rust-hir-type-check-expr.cc b/gcc/rust/typecheck/rust-hir-type-check-expr.cc
index 7d86abb86836..a05d0fd5bde3 100644
--- a/gcc/rust/typecheck/rust-hir-type-check-expr.cc
+++ b/gcc/rust/typecheck/rust-hir-type-check-expr.cc
@@ -1097,8 +1097,7 @@ TypeCheckExpr::visit (HIR::MethodCallExpr &expr)
       r.add_fixit_replace (rich_msg.c_str ());
 
       rust_error_at (
-	r, ErrorCode::E0034,
-	"multiple applicable items in scope for method %qs",
+	r, ErrorCode::E0592, "duplicate definitions with name %qs",
 	expr.get_method_name ().get_segment ().as_string ().c_str ());
       return;
     }
diff --git a/gcc/testsuite/rust/compile/generics7.rs b/gcc/testsuite/rust/compile/generics7.rs
index ae0dc7e906a5..dcedead4b9f3 100644
--- a/gcc/testsuite/rust/compile/generics7.rs
+++ b/gcc/testsuite/rust/compile/generics7.rs
@@ -22,9 +22,9 @@ impl<T> Foo<T> {
         self.a
     }
 }
-
+// E0592
 fn main() {
     let a = Foo { a: 123 };
     a.bar();
-    // { dg-error "multiple applicable items in scope for method .bar." "" { target *-*-* } .-1 }
+    // { dg-error "duplicate definitions with name .bar." "" { target *-*-* } .-1 }
 }
diff --git a/gcc/testsuite/rust/compile/generics8.rs b/gcc/testsuite/rust/compile/generics8.rs
index 99df0c9b58cc..88c4bac1b076 100644
--- a/gcc/testsuite/rust/compile/generics8.rs
+++ b/gcc/testsuite/rust/compile/generics8.rs
@@ -10,7 +10,7 @@ impl<T> Foo<i32, T> {
 }
 
 impl Foo<i32, f32> {
-    fn test() -> f32 { // { dg-error "duplicate definitions with name test" }
+    fn test() -> f32 { // { dg-error "duplicate definitions with name .test." }
         123f32
     }
 }
diff --git a/gcc/testsuite/rust/compile/issue-925.rs b/gcc/testsuite/rust/compile/issue-925.rs
index d5eed7e75898..507fe9444e5f 100644
--- a/gcc/testsuite/rust/compile/issue-925.rs
+++ b/gcc/testsuite/rust/compile/issue-925.rs
@@ -17,9 +17,9 @@ impl A for S {
 impl B for S {
     fn foo(&self) {}
 }
-
+// E0592
 fn test() {
     let a = S;
     a.foo();
-    // { dg-error "multiple applicable items in scope for method .foo." "" { target *-*-* } .-1 }
+    // { dg-error "duplicate definitions with name .foo." "" { target *-*-* } .-1 }
 }