diff --git a/bench/benchmain.cpp b/bench/benchmain.cpp
index 6f062e4..fb6d376 100644
--- a/bench/benchmain.cpp
+++ b/bench/benchmain.cpp
@@ -887,6 +887,7 @@
             if (outDir.size() > 0) {
                 saveFile(bench->getName(), configName, outDir.c_str(),
                          device->accessBitmap(false));
+                canvas->clear(SK_ColorWHITE);
             }
         }
         logger.logProgress(SkString("\n"));