diff --git a/libs/gui/BufferQueueProducer.cpp b/libs/gui/BufferQueueProducer.cpp
index 3f4c5da..26784cf 100644
--- a/libs/gui/BufferQueueProducer.cpp
+++ b/libs/gui/BufferQueueProducer.cpp
@@ -1120,8 +1120,9 @@
         mCore->mFreeBuffers.push_back(slot);
     }
 
-    if (mCore->mConsumerListener != nullptr) {
-        mCore->mConsumerListener->onFrameCancelled(mSlots[slot].mGraphicBuffer->getId());
+    auto gb = mSlots[slot].mGraphicBuffer;
+    if (mCore->mConsumerListener != nullptr && gb != nullptr) {
+        mCore->mConsumerListener->onFrameCancelled(gb->getId());
     }
     mSlots[slot].mFence = fence;
     mCore->mDequeueCondition.notify_all();