--- a/dom/media/mediasource/SourceBuffer.cpp
+++ b/dom/media/mediasource/SourceBuffer.cpp
@@ -18,16 +18,22 @@
 #include "nsError.h"
 #include "nsIEventTarget.h"
 #include "nsIRunnable.h"
 #include "nsThreadUtils.h"
 #include "mozilla/Logging.h"
 #include <time.h>
 #include "TimeUnits.h"
 
+// GetCurrentTime is defined in winbase.h as zero argument macro forwarding to
+// GetTickCount() and conflicts with MediaDecoder::GetCurrentTime implementation.
+#ifdef GetCurrentTime
+#undef GetCurrentTime
+#endif
+
 struct JSContext;
 class JSObject;
 
 extern mozilla::LogModule* GetMediaSourceLog();
 extern mozilla::LogModule* GetMediaSourceAPILog();
 
 #define MSE_DEBUG(arg, ...) MOZ_LOG(GetMediaSourceLog(), mozilla::LogLevel::Debug, ("SourceBuffer(%p:%s)::%s: " arg, this, mType.get(), __func__, ##__VA_ARGS__))
 #define MSE_DEBUGV(arg, ...) MOZ_LOG(GetMediaSourceLog(), mozilla::LogLevel::Verbose, ("SourceBuffer(%p:%s)::%s: " arg, this, mType.get(), __func__, ##__VA_ARGS__))