diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 2d0a394d80a5..bdc7392f9306 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -7114,7 +7114,7 @@ let
     guiSupport = false;		# use mercurialFull to get hgk GUI
   };
 
-  mercurialFull = appendToName "full" (pkgs.mercurial.override { guiSupport = true; });
+  mercurialFull = lowPrio (appendToName "full" (pkgs.mercurial.override { guiSupport = true; }));
 
   merkaartor = callPackage ../applications/misc/merkaartor { };
 
diff --git a/pkgs/top-level/release.nix b/pkgs/top-level/release.nix
index 67aec37a821b..6172e57b73f9 100644
--- a/pkgs/top-level/release.nix
+++ b/pkgs/top-level/release.nix
@@ -188,6 +188,7 @@ with (import ./release-lib.nix);
   mcron = linux;
   mdadm = linux;
   mercurial = allBut "i686-cygwin";
+  mercurialFull = allBut "i686-cygwin";
   mesa = mesaPlatforms;
   midori = linux;
   mingetty = linux;