diff --git a/tools/viewer/SKPSlide.cpp b/tools/viewer/SKPSlide.cpp
index 5b4d312..1c03a5e 100644
--- a/tools/viewer/SKPSlide.cpp
+++ b/tools/viewer/SKPSlide.cpp
@@ -49,7 +49,9 @@
 
 void SKPSlide::load(SkScalar, SkScalar) {
     fPic = read_picture(fPath.c_str());
-    fCullRect = fPic->cullRect().roundOut();
+    if (fPic) {
+        fCullRect = fPic->cullRect().roundOut();
+    }
 }
 
 void SKPSlide::unload() {