diff --git a/llvm/lib/Support/CommandLine.cpp b/llvm/lib/Support/CommandLine.cpp
index fc25a63..eed7804 100644
--- a/llvm/lib/Support/CommandLine.cpp
+++ b/llvm/lib/Support/CommandLine.cpp
@@ -332,7 +332,7 @@
     free (*i);
 }
 
-void cl::ParseCommandLineOptions(int &argc, char **argv,
+void cl::ParseCommandLineOptions(int argc, char **argv,
                                  const char *Overview) {
   // Process all registered options.
   std::vector<Option*> PositionalOpts;