diff --git a/libs/gui/ConsumerBase.cpp b/libs/gui/ConsumerBase.cpp
index 8acdfed..d4e4dc3 100644
--- a/libs/gui/ConsumerBase.cpp
+++ b/libs/gui/ConsumerBase.cpp
@@ -287,6 +287,9 @@
     }
 
     if (item->mGraphicBuffer != NULL) {
+        if (mSlots[item->mSlot].mGraphicBuffer != NULL) {
+            freeBufferLocked(item->mSlot);
+        }
         mSlots[item->mSlot].mGraphicBuffer = item->mGraphicBuffer;
     }