diff --git a/package/ctcgfw/subconverter/Makefile b/package/ctcgfw/subconverter/Makefile
index 900d0b9a9b..3bc892c54a 100644
--- a/package/ctcgfw/subconverter/Makefile
+++ b/package/ctcgfw/subconverter/Makefile
@@ -47,7 +47,7 @@ TARGET_CXXFLAGS := $(FPIC) $(filter-out -O%,$(TARGET_CXXFLAGS)) -O3
 TARGET_CXXFLAGS += -Wall -Wextra -ffunction-sections -fdata-sections -flto
 TARGET_LDFLAGS += -Wl,--gc-sections -flto
 
-# CMAKE_OPTIONS += -DCMAKE_BUILD_TYPE=Release
+CMAKE_OPTIONS += -DCMAKE_BUILD_TYPE=Release
 
 define Package/$(PKG_NAME)/install
 	$(INSTALL_DIR) $(1)/usr/bin