diff --git a/libgralloc/gpu.cpp b/libgralloc/gpu.cpp
index 8b512bf..a0d7d8d 100644
--- a/libgralloc/gpu.cpp
+++ b/libgralloc/gpu.cpp
@@ -315,6 +315,7 @@
             (!strncasecmp(property,"true", PROPERTY_VALUE_MAX )))) {
             useFbMem = true;
         } else {
+            usage &= ~GRALLOC_USAGE_PRIVATE_ALLOC_UBWC;
             if (property_get("debug.gralloc.enable_fb_ubwc", isUBWC, NULL) > 0){
                 if ((!strncmp(isUBWC, "1", PROPERTY_VALUE_MAX)) ||
                     (!strncasecmp(isUBWC, "true", PROPERTY_VALUE_MAX))) {