diff --git a/samplecode/SampleRegion.cpp b/samplecode/SampleRegion.cpp
index 1bd3162..39c27a8 100644
--- a/samplecode/SampleRegion.cpp
+++ b/samplecode/SampleRegion.cpp
@@ -280,7 +280,7 @@
                 SkASSERT(size == size2);
 
                 SkRegion    tmp3;
-                SkDEBUGCODE(size2 = ) tmp3.readFromMemory(buffer);
+                SkDEBUGCODE(size2 = ) tmp3.readFromMemory(buffer, 1000);
                 SkASSERT(size == size2);
 
                 SkASSERT(tmp3 == tmp);