diff --git a/image/SVGDocumentWrapper.cpp b/image/SVGDocumentWrapper.cpp
index b430f04b3a0..b28ac7c605a 100644
--- a/image/SVGDocumentWrapper.cpp
+++ b/image/SVGDocumentWrapper.cpp
@@ -115,6 +115,12 @@ SVGDocumentWrapper::FlushImageTransformInvalidation()
bool
SVGDocumentWrapper::IsAnimated()
{
+ // Can be called for animated images during shutdown, after we've
+ // already Observe()'d XPCOM shutdown and cleared out our mViewer pointer.
+ if (!mViewer) {
+ return false;
+ }
+
nsIDocument* doc = mViewer->GetDocument();
if (!doc) {
return false;
diff --git a/image/test/crashtests/1253362-1.html b/image/test/crashtests/1253362-1.html
new file mode 100644
index 00000000000..fdee850aabd
--- /dev/null
+++ b/image/test/crashtests/1253362-1.html
@@ -0,0 +1,11 @@
+
+
+
+
+
+
+
+
+
+
+
diff --git a/image/test/crashtests/crashtests.list b/image/test/crashtests/crashtests.list
index 63465fff252..cecfcedc18f 100644
--- a/image/test/crashtests/crashtests.list
+++ b/image/test/crashtests/crashtests.list
@@ -21,6 +21,7 @@ load 1242093-1.html
load 1242778-1.png
load 1249576-1.png
load 1251091-1.html
+load 1253362-1.html
load colormap-range.gif
HTTP load delayedframe.sjs # A 3-frame animated GIF with an inordinate delay between the second and third frame