diff --git a/tests/kdc/check-uu.in b/tests/kdc/check-uu.in
index 3ab934f0b..ad16b84ce 100644
--- a/tests/kdc/check-uu.in
+++ b/tests/kdc/check-uu.in
@@ -70,6 +70,8 @@ rm -f current-db*
 rm -f out-*
 rm -f mkey.file*
 
+> messages.log
+
 echo Creating database
 ${kadmin} \
     init \