diff --git a/bouffalo.mk b/bouffalo.mk
index c3c071464..6e7f27659 100644
--- a/bouffalo.mk
+++ b/bouffalo.mk
@@ -1,10 +1,10 @@
 # Component Makefile
 #
 ## These include paths would be exported to project level
-COMPONENT_ADD_INCLUDEDIRS += src/ src/httpserver/ src/cmnds/ src/logging/ src/hal/bl602/ src/mqtt/
+COMPONENT_ADD_INCLUDEDIRS += src/ src/httpserver/ src/cmnds/ src/logging/ src/hal/bl602/ src/mqtt/ src/cJSON
 
 ## not be exported to project level
-COMPONENT_PRIV_INCLUDEDIRS :=							 
+COMPONENT_PRIV_INCLUDEDIRS :=
 
 
 ## This component's src 
@@ -14,7 +14,7 @@ COMPONENT_SRCS :=
 COMPONENT_OBJS := $(patsubst %.c,%.o, $(COMPONENT_SRCS))
 COMPONENT_OBJS := $(patsubst %.S,%.o, $(COMPONENT_OBJS))
 
-COMPONENT_SRCDIRS := src/ src/httpserver/ src/cmnds/ src/logging/ src/hal/bl602/ src/mqtt/
+COMPONENT_SRCDIRS := src/ src/httpserver/ src/cmnds/ src/logging/ src/hal/bl602/ src/mqtt/ src/cJSON
 
 
 
diff --git a/src/httpserver/hass.c b/src/httpserver/hass.c
index af3ccb3fa..cafdeaaa8 100644
--- a/src/httpserver/hass.c
+++ b/src/httpserver/hass.c
@@ -68,7 +68,11 @@ cJSON *hass_build_device_node(const char *baseName, cJSON *ids) {
     cJSON *dev = cJSON_CreateObject();
     cJSON_AddItemToObject(dev, "ids", ids);     //identifiers
     cJSON_AddStringToObject(dev, "name", baseName);
+
+    #ifdef USER_SW_VER
     cJSON_AddStringToObject(dev, "sw", USER_SW_VER);   //sw_version
+    #endif
+
     cJSON_AddStringToObject(dev, "mf", MANUFACTURER);   //manufacturer
     cJSON_AddStringToObject(dev, "mdl", PLATFORM_MCU_NAME);  //Using chipset for model
     return dev;