diff -Naur a/main/main.c b/main/main.c
--- a/main/main.c	2018-07-31 16:33:06.000000000 +0200
+++ b/main/main.c	2018-08-03 19:25:35.643311805 +0200
@@ -772,7 +772,7 @@
 	STD_PHP_INI_BOOLEAN("mail.add_x_header",			"0",		PHP_INI_SYSTEM|PHP_INI_PERDIR,		OnUpdateBool,			mail_x_header,			php_core_globals,	core_globals)
 	STD_PHP_INI_ENTRY("mail.log",					NULL,		PHP_INI_SYSTEM|PHP_INI_PERDIR,		OnUpdateMailLog,			mail_log,			php_core_globals,	core_globals)
 	PHP_INI_ENTRY("browscap",					NULL,		PHP_INI_SYSTEM,		OnChangeBrowscap)
-	PHP_INI_ENTRY("memory_limit",				"128M",		PHP_INI_ALL,		OnChangeMemoryLimit)
+	PHP_INI_ENTRY("memory_limit",				"128M",		PHP_INI_SYSTEM,		OnChangeMemoryLimit)
 	PHP_INI_ENTRY("precision",					"14",		PHP_INI_ALL,		OnSetPrecision)
 	PHP_INI_ENTRY("sendmail_from",				NULL,		PHP_INI_ALL,		NULL)
 	PHP_INI_ENTRY("sendmail_path",	DEFAULT_SENDMAIL_PATH,	PHP_INI_SYSTEM,		NULL)