diff --git a/content/canvas/src/nsCanvasRenderingContext2DAzure.cpp b/content/canvas/src/nsCanvasRenderingContext2DAzure.cpp
index db53ac8d8ed4..19083ab0ce24 100644
--- a/content/canvas/src/nsCanvasRenderingContext2DAzure.cpp
+++ b/content/canvas/src/nsCanvasRenderingContext2DAzure.cpp
@@ -3570,7 +3570,7 @@ JS::Value
 nsCanvasRenderingContext2DAzure::GetMozDash(JSContext* cx, ErrorResult& error)
 {
   JS::Value mozDash;
-  DashArrayToJSVal(CurrentState().dash, cx, &mozDash);
+  error = DashArrayToJSVal(CurrentState().dash, cx, &mozDash);
   return mozDash;
 }