diff --git a/drmdisplaycompositor.cpp b/drmdisplaycompositor.cpp
index 0b4e2b2..d2acf76 100644
--- a/drmdisplaycompositor.cpp
+++ b/drmdisplaycompositor.cpp
@@ -626,7 +626,7 @@
     }
 
     // TODO: Once we have atomic test, this should fall back to GL
-    if (alpha != 0xFF && plane->alpha_property().id() == 0) {
+    if (alpha != 0xFFFF && plane->alpha_property().id() == 0) {
       ALOGE("Alpha is not supported on plane %d", plane->id());
       ret = -EINVAL;
       break;