diff --git a/tests/init.sh b/tests/init.sh
index 4cb8f1ab..1f5ab49c 100644
--- a/tests/init.sh
+++ b/tests/init.sh
@@ -236,7 +236,7 @@ kernel_version_code()
 	(
 		set -f
 		IFS=.
-		set -- $1
+		set -- $1 0 0
 		v1="${1%%[!0-9]*}" && [ -n "$v1" ] || v1=0
 		v2="${2%%[!0-9]*}" && [ -n "$v2" ] || v2=0
 		v3="${3%%[!0-9]*}" && [ -n "$v3" ] || v3=0