diff --git a/llvm/lib/DebugInfo/PDB/PDBExtras.cpp b/llvm/lib/DebugInfo/PDB/PDBExtras.cpp
index c291185..504cfdf 100644
--- a/llvm/lib/DebugInfo/PDB/PDBExtras.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBExtras.cpp
@@ -208,6 +208,7 @@
     CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Lang, JScript, OS)
     CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Lang, MSIL, OS)
     CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Lang, HLSL, OS)
+    CASE_OUTPUT_ENUM_CLASS_NAME(PDB_Lang, D, OS)
   }
   return OS;
 }