diff --git a/package/stunnel/stunnel.mk b/package/stunnel/stunnel.mk
index adae204148..ef93dc6073 100644
--- a/package/stunnel/stunnel.mk
+++ b/package/stunnel/stunnel.mk
@@ -10,7 +10,7 @@ STUNNEL_DEPENDENCIES = host-pkgconf openssl
 STUNNEL_CONF_OPTS = --with-ssl=$(STAGING_DIR)/usr --with-threads=fork \
 	--disable-libwrap
 STUNNEL_CONF_ENV = \
-	ax_cv_check_cflags___fstack_protector=$(if $(BR2_TOOLCHAIN_HAS_SSP),yes,no) \
+	ax_cv_check_cflags___fstack_protector_strong=$(if $(BR2_TOOLCHAIN_HAS_SSP),yes,no) \
 	LIBS=`$(PKG_CONFIG_HOST_BINARY) --libs openssl`
 STUNNEL_LICENSE = GPL-2.0+
 STUNNEL_LICENSE_FILES = COPYING.md COPYRIGHT.md