diff --git a/catboxuploader b/catboxuploader
index fcf1a76..de89320 100644
--- a/catboxuploader
+++ b/catboxuploader
@@ -45,4 +45,10 @@ exit 1
 }
 
 
+[ ! -f "$1" ] && { 
+echo "file not found"
+exit 1
+}
+
+
 main && echo "uploaded"
\ No newline at end of file