diff --git a/gpu/src/GrRenderTarget.cpp b/gpu/src/GrRenderTarget.cpp
index 042bc59..8a73a84 100644
--- a/gpu/src/GrRenderTarget.cpp
+++ b/gpu/src/GrRenderTarget.cpp
@@ -31,7 +31,7 @@
     } else {
         colorBits = GrBytesPerPixel(fConfig);
     }
-    return fWidth * fHeight * colorBits;
+    return fAllocatedWidth * fAllocatedHeight * colorBits * GrMax(1,fSampleCnt);
 }
 
 void GrRenderTarget::flagAsNeedingResolve(const GrIRect* rect) {