diff --git a/lang/lpeg/Makefile b/lang/lpeg/Makefile
index ee8a4ef1fe..35f5aa673b 100644
--- a/lang/lpeg/Makefile
+++ b/lang/lpeg/Makefile
@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=lpeg
 PKG_VERSION:=0.12.2
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 PKG_MAINTAINER:=Dirk Chang <dirk@kooiot.com>
 PKG_LICENSE:=MIT
 
@@ -38,7 +38,8 @@ define Build/Configure
 endef
 
 # add make variable overrides here
-MAKE_FLAGS +=
+MAKE_FLAGS += \
+	COPT="$(TARGET_CFLAGS) $(TARGET_CPPFLAGS) -O2"
 
 define Package/lpeg/install
 	$(INSTALL_DIR) $(1)/usr/lib/lua