diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index f44f19b2db5..d47356131da 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -7889,6 +7889,7 @@ let
 
   exult = callPackage ../games/exult {
     stdenv = overrideGCC stdenv gcc42;
+    libpng = libpng12;
   };
 
   /*