diff --git a/lib/Bitcode/Reader/BitReader.cpp b/lib/Bitcode/Reader/BitReader.cpp
index 7ccc186892c..e5b8f7c7685 100644
--- a/lib/Bitcode/Reader/BitReader.cpp
+++ b/lib/Bitcode/Reader/BitReader.cpp
@@ -54,7 +54,6 @@ int LLVMParseBitcodeInContext(LLVMMemoryBufferRef MemBuf,
    a module provider which performs lazy deserialization. Returns 0 on success.
    Optionally returns a human-readable error message via OutMessage. */ 
 int LLVMGetBitcodeModuleProvider(LLVMMemoryBufferRef MemBuf,
-                                 LLVMContextRef ContextRef,
                                  LLVMModuleProviderRef *OutMP,
                                   char **OutMessage) {
   std::string Message;