diff --git a/gamerunner.sh b/gamerunner.sh
index 49e91b3..683c5ff 100755
--- a/gamerunner.sh
+++ b/gamerunner.sh
@@ -172,5 +172,10 @@ then
 	echo "$GAMESCOPE_PATH" -f -b "$@"
 	exec "$GAMESCOPE_PATH" -f -b "$GR_PREFIX" "$@"
 else
-	exec sh -c "$GR_PREFIX '$@'"
+	if [ -z "$GR_PREFIX" ]
+	then
+		exec sh -c "$@"
+	else
+		exec $GR_PREFIX "$@"
+	fi
 fi