diff --git a/main/php.h b/main/php.h
index 239aef2bb07..ed6a4d71896 100644
--- a/main/php.h
+++ b/main/php.h
@@ -280,7 +280,12 @@ PHPAPI size_t php_write(void *buf, size_t size);
 PHPAPI size_t php_printf(const char *format, ...) PHP_ATTRIBUTE_FORMAT(printf, 1,
 		2);
 PHPAPI int php_get_module_initialized(void);
+#ifdef HAVE_SYSLOG_H
+#include "php_syslog.h"
 #define php_log_err(msg) php_log_err_with_severity(msg, LOG_NOTICE)
+#else
+#define php_log_err(msg) php_log_err_with_severity(msg, 5)
+#endif
 PHPAPI ZEND_COLD void php_log_err_with_severity(char *log_message, int syslog_type_int);
 int Debug(char *format, ...) PHP_ATTRIBUTE_FORMAT(printf, 1, 2);
 int cfgparse(void);