diff --git a/src/plugins/imap-filter-sieve/cmd-filter-sieve.c b/src/plugins/imap-filter-sieve/cmd-filter-sieve.c
index 5ecfd38520aba0bf00098f92ba3f0bc73aac05fa..2d8847b41e6c6533d7ac7049650857d833d0464c 100644
--- a/src/plugins/imap-filter-sieve/cmd-filter-sieve.c
+++ b/src/plugins/imap-filter-sieve/cmd-filter-sieve.c
@@ -61,7 +61,7 @@ static bool cmd_filter_sieve_delivery(struct client_command_context *cmd)
 					      &error, &error_string);
 	if (ret < 0) {
 		client_send_tagline(
-			cmd, imap_get_error_string(cmd, error_string, error));
+			cmd, imap_get_error_string(error_string, error));
 		imap_filter_deinit(ctx);
 		return TRUE;
 	}
@@ -167,7 +167,7 @@ cmd_filter_sieve_script_parse_name(struct client_command_context *cmd)
 	}
 	if (ret < 0) {
 		client_send_tagline(
-			cmd, imap_get_error_string(cmd, error_string, error));
+			cmd, imap_get_error_string(error_string, error));
 		imap_filter_deinit(ctx);
 		return TRUE;
 	}