diff --git a/llvm/tools/gccas/gccas.cpp b/llvm/tools/gccas/gccas.cpp
index ef1d8d6376d9..813042cf50c7 100644
--- a/llvm/tools/gccas/gccas.cpp
+++ b/llvm/tools/gccas/gccas.cpp
@@ -54,6 +54,9 @@ namespace {
   cl::opt<bool> 
   NoCompress("disable-compression", cl::init(false),
              cl::desc("Don't ompress the generated bytecode"));
+
+  cl::opt<bool> TF("traditional-format", cl::Hidden,
+    cl::desc("Compatibility option: ignored"));
 }