diff --git a/clang/lib/AST/ODRHash.cpp b/clang/lib/AST/ODRHash.cpp
index a1c2fbb0c4f2..f037827da834 100644
--- a/clang/lib/AST/ODRHash.cpp
+++ b/clang/lib/AST/ODRHash.cpp
@@ -159,7 +159,6 @@ void ODRHash::AddTemplateArgument(TemplateArgument TA) {
       AddStmt(TA.getAsExpr());
       break;
     case TemplateArgument::Pack:
-      llvm_unreachable("Pack");
       break;
   }
 }