diff --git a/Source/kwsys/SharedForward.h.in b/Source/kwsys/SharedForward.h.in
index dd4db55c1..8163683df 100644
--- a/Source/kwsys/SharedForward.h.in
+++ b/Source/kwsys/SharedForward.h.in
@@ -507,7 +507,7 @@ static void kwsys_shared_forward_execvp(const char* cmd,
   nargv[argc] = 0;
 
   /* Replace the command line to be used.  */
-  argv = nargv;
+  argv = (char const* const*)nargv;
   }
 #endif