diff --git a/main/main.c b/main/main.c
index df40b5c4f89..50dffa369b9 100644
--- a/main/main.c
+++ b/main/main.c
@@ -275,7 +275,7 @@ void php_log_err(char *log_message)
 	if (PG(error_log) != NULL) {
 #ifdef HAVE_SYSLOG_H
 		if (!strcmp(PG(error_log), "syslog")) {
-			php_syslog(LOG_NOTICE, log_message);
+			php_syslog(LOG_NOTICE, "%.500s", log_message);
 			return;
 		}
 #endif