diff --git a/tests/kdc/check-kdc.in b/tests/kdc/check-kdc.in
index a1577f5f6..625e97de0 100644
--- a/tests/kdc/check-kdc.in
+++ b/tests/kdc/check-kdc.in
@@ -80,6 +80,8 @@ rm -f current-db*
 rm -f out-*
 rm -f mkey.file*
 
+> messages.log
+
 echo Creating database
 ${kadmin} \
     init \