diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index e919381a3ef..74ea5200699 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -23529,6 +23529,7 @@ in
 
   plexamp = callPackage ../applications/audio/plexamp { };
 
+  # Upstream says it supports only qt5.9 which is not packaged, and building with qt newer than 5.12 fails
   plex-media-player = libsForQt512.callPackage ../applications/video/plex-media-player { };
 
   plex-mpv-shim = python3Packages.callPackage ../applications/video/plex-mpv-shim { };