diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 3c08f0876b3..22a15d26d66 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -22329,6 +22329,7 @@ in
 
   mercurialFull = appendToName "full" (pkgs.mercurial.override { guiSupport = true; });
 
+  # Needs qtwebkit which is broken on qt5.15
   merkaartor = libsForQt514.callPackage ../applications/misc/merkaartor { };
 
   meshlab = libsForQt5.callPackage ../applications/graphics/meshlab { };