diff --git a/src/effects/SkImageSource.cpp b/src/effects/SkImageSource.cpp
index 9c32cf8..96f5bf4 100644
--- a/src/effects/SkImageSource.cpp
+++ b/src/effects/SkImageSource.cpp
@@ -27,7 +27,7 @@
                                          const SkRect& srcRect,
                                          const SkRect& dstRect,
                                          SkFilterQuality filterQuality) {
-    if (!image) {
+    if (!image || srcRect.width() <= 0.0f || srcRect.height() <= 0.0f) {
         return nullptr;
     }