diff --git a/Run.sh b/Run.sh
index 87cbddc..1b2d0a9 100755
--- a/Run.sh
+++ b/Run.sh
@@ -2,8 +2,8 @@
 
 SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
 OUTPUT_DIR="$2"
-CFG_FILE="$3"
 DEFAULT_CFG_FILE=UnrealTournament.ini
+CFG_FILE="${3:-$DEFAULT_CFG_FILE}"
 
 function add_iniKeyEx() {
 	crudini --set $OUTPUT_DIR/System/$1 $2 __$3 $4