diff --git a/abuild b/abuild
index 6218836..a5b6c6a 100755
--- a/abuild
+++ b/abuild
@@ -56,6 +56,9 @@ checkdeps() {
 }
 
 checkmd5() {
+	if [ -z "$source" ]; then
+		return 0
+	fi
 	if [ -z "$md5sums" ]; then
 		die "Use 'abuild checksum >>$APKBUILD' to generate a checksum"
 	fi