diff --git a/make/openvpn.mk b/make/openvpn.mk
index 50624ad640..bd171aa386 100644
--- a/make/openvpn.mk
+++ b/make/openvpn.mk
@@ -27,6 +27,7 @@ $(OPENVPN_DIR)/.unpacked: $(DL_DIR)/$(OPENVPN_SOURCE) lzo openssl
 $(OPENVPN_DIR)/.configured: $(OPENVPN_DIR)/.unpacked
 	(cd $(OPENVPN_DIR); rm -rf config.cache; \
 		$(TARGET_CONFIGURE_OPTS) \
+		CFLAGS="$(TARGET_CFLAGS)" \
 		./configure \
 		--target=$(GNU_TARGET_NAME) \
 		--host=$(GNU_TARGET_NAME) \