diff --git a/tests/gss/check-ntlm.in b/tests/gss/check-ntlm.in
index 278ccafed..5cd839c8e 100644
--- a/tests/gss/check-ntlm.in
+++ b/tests/gss/check-ntlm.in
@@ -76,6 +76,8 @@ rm -f current-db*
 rm -f out-*
 rm -f mkey.file*
 
+> messages.log
+
 echo Creating database
 ${kadmin} \
     init \