diff --git a/srcpkgs/firefox/patches/flac-no-ffvpx.patch b/srcpkgs/firefox/patches/flac-no-ffvpx.patch
index e3f60e8ecf6..740f5614456 100644
--- a/srcpkgs/firefox/patches/flac-no-ffvpx.patch
+++ b/srcpkgs/firefox/patches/flac-no-ffvpx.patch
@@ -12,15 +12,14 @@ index 53fc3c9937f7..b23771ab80fa 100644
  
  namespace mozilla {
  
-@@ -14,6 +15,11 @@ namespace mozilla {
+@@ -14,6 +15,10 @@ namespace mozilla {
  bool FlacDecoder::IsEnabled() {
  #ifdef MOZ_FFVPX
    return StaticPrefs::media_flac_enabled();
 +#elif defined(MOZ_FFMPEG)
 +  RefPtr<PDMFactory> platform = new PDMFactory();
 +  return StaticPrefs::media_flac_enabled() &&
-+         platform->SupportsMimeType("audio/flac"_ns,
-+                                    /* DecoderDoctorDiagnostics* */ nullptr);
++         platform->SupportsMimeType("audio/flac"_ns);
  #else
    // Until bug 1295886 is fixed.
    return false;