diff --git a/include/hardware/hwcomposer.h b/include/hardware/hwcomposer.h
index b78746c..32ba90c 100644
--- a/include/hardware/hwcomposer.h
+++ b/include/hardware/hwcomposer.h
@@ -28,7 +28,10 @@
 
 /*****************************************************************************/
 
-#define HWC_API_VERSION HARDWARE_DEVICE_API_VERSION(0,2)
+#define HWC_DEVICE_API_VERSION      HARDWARE_DEVICE_API_VERSION(0, 2)
+#define HWC_MODULE_API_VERSION      HARDWARE_MODULE_API_VERSION(0, 1)
+// for compatibility
+#define HWC_API_VERSION             HWC_DEVICE_API_VERSION
 
 /**
  * The id of this module