diff --git a/clang/lib/Sema/SemaOpenMP.cpp b/clang/lib/Sema/SemaOpenMP.cpp
index 5a4254f11a8b8..d2393c17bcc85 100644
--- a/clang/lib/Sema/SemaOpenMP.cpp
+++ b/clang/lib/Sema/SemaOpenMP.cpp
@@ -13498,7 +13498,8 @@ buildDeclareReductionRef(Sema &SemaRef, SourceLocation Loc, SourceRange Range,
     }
   }
   if (ReductionIdScopeSpec.isSet()) {
-    SemaRef.Diag(Loc, diag::err_omp_not_resolved_reduction_identifier) << Range;
+    SemaRef.Diag(Loc, diag::err_omp_not_resolved_reduction_identifier)
+        << Ty << Range;
     return ExprError();
   }
   return ExprEmpty();
diff --git a/clang/test/OpenMP/declare_reduction_messages.cpp b/clang/test/OpenMP/declare_reduction_messages.cpp
index 1fc5ec6e683fa..eeafe9032e080 100644
--- a/clang/test/OpenMP/declare_reduction_messages.cpp
+++ b/clang/test/OpenMP/declare_reduction_messages.cpp
@@ -146,9 +146,9 @@ struct A {
 };
 
 int A_TEST() {
-  A test;
+  A test, test1;
 #pragma omp declare reduction(+ : A : omp_out) initializer(omp_priv = A()) allocate(test) // expected-warning {{extra tokens at the end of '#pragma omp declare reduction' are ignored}}
-#pragma omp parallel reduction(+ : test)
+#pragma omp parallel reduction(+ : test) reduction(::operator+: test1) // expected-error {{unable to resolve declare reduction construct for type 'A'}}
   {}
   return 0;
 }