diff --git a/libhwcomposer/Android.mk b/libhwcomposer/Android.mk
index 4e8add8..b2ef60c 100644
--- a/libhwcomposer/Android.mk
+++ b/libhwcomposer/Android.mk
@@ -33,7 +33,7 @@ ifeq ($(TARGET_HAVE_BYPASS),true)
 LOCAL_CFLAGS += -DCOMPOSITION_BYPASS
 endif
 ifeq ($(TARGET_USE_HDMI_AS_PRIMARY),true)
-#LOCAL_CFLAGS += -DHDMI_AS_PRIMARY
+LOCAL_CFLAGS += -DHDMI_AS_PRIMARY
 endif
 LOCAL_MODULE_TAGS := optional
 include $(BUILD_SHARED_LIBRARY)