diff --git a/target/scripts/startup/setup.d/dovecot.sh b/target/scripts/startup/setup.d/dovecot.sh
index fbb01871..2d03b030 100644
--- a/target/scripts/startup/setup.d/dovecot.sh
+++ b/target/scripts/startup/setup.d/dovecot.sh
@@ -87,8 +87,8 @@ function _setup_dovecot_sieve
   fi
 
   chown dovecot:root -R /usr/lib/dovecot/sieve-*
-  find /usr/lib/dovecot/sieve-* -type d -exec chmod 755 {} \;
-  chmod +x /usr/lib/dovecot/sieve-{filter,pipe}/*
+  find /usr/lib/dovecot/sieve-*             -type d -exec chmod 755 {} +
+  find /usr/lib/dovecot/sieve-{filter,pipe} -type f -exec chmod +x {} +
 }
 
 function _setup_dovecot_quota