1 files changed, 2 insertions, 3 deletions
diff --git a/clang/lib/ExtractAPI/Serialization/SymbolGraphSerializer.cpp b/clang/lib/ExtractAPI/Serialization/SymbolGraphSerializer.cpp
index c730c06..e881d56 100644
--- a/clang/lib/ExtractAPI/Serialization/SymbolGraphSerializer.cpp
+++ b/clang/lib/ExtractAPI/Serialization/SymbolGraphSerializer.cpp
@@ -1067,9 +1067,8 @@ void SymbolGraphSerializer::serializeWithExtensionGraphs(
 
   for (auto &ExtensionSGF : Serializer.ExtendedModules) {
     if (auto ExtensionOS =
-            CreateOutputStream(ExtensionSGF.getKey() + "@" + API.ProductName))
-      Serializer.serializeGraphToStream(*ExtensionOS, Options,
-                                        ExtensionSGF.getKey(),
+            CreateOutputStream(API.ProductName + "@" + ExtensionSGF.getKey()))
+      Serializer.serializeGraphToStream(*ExtensionOS, Options, API.ProductName,
                                         std::move(ExtensionSGF.getValue()));
   }
 }