diff --git a/lib/System/Unix/Program.inc b/lib/System/Unix/Program.inc
index 3a562e45d41..d2baca80025 100644
--- a/lib/System/Unix/Program.inc
+++ b/lib/System/Unix/Program.inc
@@ -197,12 +197,12 @@ Program::Execute(const Path& path,
 
       // Execute!
       if (envp != 0)
-        execve (path.c_str(), (char**)args, (char**)envp);
+        execve(path.c_str(), (char**)args, (char**)envp);
       else
-        execv (path.c_str(), (char**)args);
+        execv(path.c_str(), (char**)args);
       // If the execve() failed, we should exit and let the parent pick up
       // our non-zero exit status.
-      exit (errno);
+      exit(127);
     }
 
     // Parent process: Break out of the switch to do our processing.