diff --git a/debugger/SkDebugger.cpp b/debugger/SkDebugger.cpp
index 2d13c75..f684dd8 100644
--- a/debugger/SkDebugger.cpp
+++ b/debugger/SkDebugger.cpp
@@ -77,7 +77,7 @@
         overview->append(SkDrawCommand::GetCommandString((DrawType) i));
         overview->append(": ");
         overview->appendS32(counts[i]);
-        if (NULL != typeTimes) {
+        if (NULL != typeTimes && totTime >= 0.0) {
             overview->append(" - ");
             overview->appendf("%.2f", (*typeTimes)[i]/(float)numRuns);
             overview->append("ms");