diff --git a/src/core/command-line.cc b/src/core/command-line.cc
index eb2852623..17f1b55ee 100644
--- a/src/core/command-line.cc
+++ b/src/core/command-line.cc
@@ -41,7 +41,7 @@ CommandLine::Item::~Item ()
 {}
 
 void 
-CommandLine::Parse (int &iargc, char *argv[]) const
+CommandLine::Parse (int iargc, char *argv[]) const
 {
   int argc = iargc;
   for (argc--, argv++; argc > 0; argc--, argv++)
diff --git a/src/core/command-line.h b/src/core/command-line.h
index 0d6039d7f..2a5948361 100644
--- a/src/core/command-line.h
+++ b/src/core/command-line.h
@@ -64,7 +64,7 @@ public:
    * Obviously, this method will parse the input command-line arguments and
    * will attempt to handle them all.
    */
-  void Parse (int &argc, char *argv[]) const;
+  void Parse (int argc, char *argv[]) const;
 private:
   class Item 
   {