diff --git a/openwrt/package/screen/Makefile b/openwrt/package/screen/Makefile
index 0e2cffc44c..eaaa9abbe7 100644
--- a/openwrt/package/screen/Makefile
+++ b/openwrt/package/screen/Makefile
@@ -21,6 +21,7 @@ $(eval $(call PKG_template,SCREEN,screen,$(PKG_VERSION)-$(PKG_RELEASE),$(ARCH)))
 $(PKG_BUILD_DIR)/.configured: $(PKG_BUILD_DIR)/.prepared
 	(cd $(PKG_BUILD_DIR); rm -rf config.{cache,status} ; \
 		$(TARGET_CONFIGURE_OPTS) \
+		$(foreach flag,rename fchmod fchown strerror lstat _exit utimes vsnprintf getcwd setlocale strftime,ac_cv_func_$(flag)=yes ) \
 		CFLAGS="$(TARGET_CFLAGS)" \
 		CPPFLAGS="-I$(STAGING_DIR)/usr/include" \
 		LDFLAGS="-L$(STAGING_DIR)/usr/lib" \