diff --git a/bin/.bin/project-management/project-switch b/bin/.bin/project-management/project-switch
index e41a99d5..c0d9df92 100755
--- a/bin/.bin/project-management/project-switch
+++ b/bin/.bin/project-management/project-switch
@@ -33,6 +33,7 @@ function unset_project(){
 }
 
 function set_project(){
+	[ -z "$1" ] && exit 1
 	local switchto="$PROJECTS_PATH/$1"
 	if [ -d "$switchto" ]; then
 		if [ -L "$SYMLINC" ]; then