diff --git a/pkgs/development/libraries/opencascade/default.nix b/pkgs/development/libraries/opencascade/default.nix
index ed0d48800ef9..44e29fd7587f 100644
--- a/pkgs/development/libraries/opencascade/default.nix
+++ b/pkgs/development/libraries/opencascade/default.nix
@@ -1,4 +1,4 @@
-{stdenv, fetchurl, mesa, qt4, tcl, tk, file}:
+{stdenv, fetchurl, mesa, tcl, tk, file}:
 
 stdenv.mkDerivation rec {
   name = "opencascade-6.3.0";
@@ -7,7 +7,7 @@ stdenv.mkDerivation rec {
     md5 = "52778127974cb3141c2827f9d40d1f11";
   };
 
-  buildInputs = [ mesa qt4 tcl tk file ];
+  buildInputs = [ mesa tcl tk file ];
 
   preConfigure = ''
     cd ros
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 8fd7a6d212d0..f9ec80ca4c9f 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -4620,7 +4620,7 @@ let
   };
 
   opencascade = import ../development/libraries/opencascade {
-    inherit fetchurl stdenv mesa qt4 tcl tk file;
+    inherit fetchurl stdenv mesa tcl tk file;
   };
 
   openct = import ../development/libraries/openct {