diff --git a/zpac b/zpac
index f2509a0..1a40fad 100755
--- a/zpac
+++ b/zpac
@@ -171,11 +171,14 @@ main() {
 							fi
 						;;
 
-						(w) cfg_workdir="$OPTARG";;
+						(w) 
+							cfg_workdir="$2"
+							shift;;
+
 						(f) flag_force=1;;
 
 						(*)
-							err "Unknown key: $OPTARG"
+							err "Unknown key: $2"
 							usage
 							return 1
 						;;