diff --git a/kiss b/kiss
index 0f6aa24..66ec4f9 100755
--- a/kiss
+++ b/kiss
@@ -176,6 +176,7 @@ pkg_lint() {
 
     [ "$release" ] || die "$1" "Release field not found in version file"
     [ -x build ]   || die "$1" "Build file not found or not executable"
+    [ -f sources ] || war "$1" "Sources file not found"
     [ -s version ] || die "$1" "Version file not found or empty"
 
     [ ! -f sources ] || [ "$2" ] || [ -f checksums ] ||