diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index c0e35a6a3968..56c94520b96d 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -4448,6 +4448,7 @@ let
 
   qt46 = callPackage ../development/libraries/qt-4.x/4.6 {
     inherit (gnome) glib;
+    libpng = pkgs.libpng12;
   };
 
   qt47 = callPackage ../development/libraries/qt-4.x/4.7 {