diff --git a/dom/animation/DocumentTimeline.h b/dom/animation/DocumentTimeline.h
index afd6fcef07af..e7f236f9321e 100644
--- a/dom/animation/DocumentTimeline.h
+++ b/dom/animation/DocumentTimeline.h
@@ -14,6 +14,12 @@
 
 struct JSContext;
 
+// GetCurrentTime is defined in winbase.h as zero argument macro forwarding to
+// GetTickCount().
+#ifdef GetCurrentTime
+#undef GetCurrentTime
+#endif
+
 namespace mozilla {
 namespace dom {