diff --git a/clang/lib/Sema/SemaNamedCast.cpp b/clang/lib/Sema/SemaNamedCast.cpp
index 166ed24..fbde930 100644
--- a/clang/lib/Sema/SemaNamedCast.cpp
+++ b/clang/lib/Sema/SemaNamedCast.cpp
@@ -776,7 +776,7 @@
   if (DestPointee->isVoidType()) {
     assert(DestPointer && "Reference to void is not possible");
   } else if (DestRecord) {
-    if (Self.DiagnoseIncompleteType(OpRange.getBegin(), DestPointee, 
+    if (Self.RequireCompleteType(OpRange.getBegin(), DestPointee, 
                                     diag::err_bad_dynamic_cast_incomplete,
                                     DestRange))
       return;
@@ -810,7 +810,7 @@
 
   const RecordType *SrcRecord = SrcPointee->getAsRecordType();
   if (SrcRecord) {
-    if (Self.DiagnoseIncompleteType(OpRange.getBegin(), SrcPointee,
+    if (Self.RequireCompleteType(OpRange.getBegin(), SrcPointee,
                                     diag::err_bad_dynamic_cast_incomplete,
                                     SrcExpr->getSourceRange()))
       return;