diff --git a/openwrt/Makefile b/openwrt/Makefile
index bdbbbde..312f1e5 100644
--- a/openwrt/Makefile
+++ b/openwrt/Makefile
@@ -61,7 +61,7 @@ CMAKE_OPTIONS += \
 	-DCMAKE_BUILD_TYPE=$(if $(CONFIG_UA2F_DEBUG_BUILD),Debug,Release)
 
 ifeq ($(CONFIG_UA2F_DEBUG_BUILD),y)
-  PKG_BUILD_FLAGS += no-strip
+  STRIP:=true
 endif
 
 define Package/ua2f/description