diff --git a/uxnrun b/uxnrun
index 14096cb..fb14da0 100755
--- a/uxnrun
+++ b/uxnrun
@@ -8,9 +8,8 @@ if [ $# -lt 1 ]; then
     exit 1
 fi
 
-if [ "$1" = "-c" ]; then
-    shift
-    $BIN/uxnasm $1 $DEST && $BIN/uxncli $DEST
-else
-    $BIN/uxnasm $1 $DEST && $BIN/uxnemu $DEST
-fi
+case "$1" in
+    -c) $BIN/uxnasm $2 $DEST && $BIN/uxncli $DEST;;
+    -s) $BIN/uxnasm $3 $DEST && $BIN/uxnemu -s $2 $DEST;;
+    *) $BIN/uxnasm $1 $DEST && $BIN/uxnemu $DEST;;
+esac