1 files changed, 7 insertions, 6 deletions
diff --git a/lib/AST/MicrosoftMangle.cpp b/lib/AST/MicrosoftMangle.cpp
index 982e3aceec..f0041b2422 100644
--- a/lib/AST/MicrosoftMangle.cpp
+++ b/lib/AST/MicrosoftMangle.cpp
@@ -1270,12 +1270,13 @@ void MicrosoftCXXNameMangler::mangleType(const RecordType *T, SourceRange) {
 void MicrosoftCXXNameMangler::mangleType(const TagType *T) {
   switch (T->getDecl()->getTagKind()) {
     case TTK_Union:
-      Out << 'T';
-      break;
-    case TTK_Struct:
-      Out << 'U';
-      break;
-    case TTK_Class:
+      Out << 'T';
+      break;
+    case TTK_Struct:
+    case TTK_Interface:
+      Out << 'U';
+      break;
+    case TTK_Class:
       Out << 'V';
       break;
     case TTK_Enum: