diff --git a/libs/ui/GraphicBuffer.cpp b/libs/ui/GraphicBuffer.cpp
index e21dc53..9b0bd60 100644
--- a/libs/ui/GraphicBuffer.cpp
+++ b/libs/ui/GraphicBuffer.cpp
@@ -126,6 +126,7 @@
 
 ANativeWindowBuffer* GraphicBuffer::getNativeBuffer() const
 {
+    LOG_ALWAYS_FATAL_IF(this == NULL, "getNativeBuffer() called on NULL GraphicBuffer");
     return static_cast<ANativeWindowBuffer*>(
             const_cast<GraphicBuffer*>(this));
 }