diff --git a/tests/plugin/check-pac.in b/tests/plugin/check-pac.in
index d3a1b6168..b8061a797 100644
--- a/tests/plugin/check-pac.in
+++ b/tests/plugin/check-pac.in
@@ -68,6 +68,8 @@ rm -f current-db*
 rm -f out-*
 rm -f mkey.file*
 
+> messages.log
+
 echo Creating database
 ${kadmin} \
     init \