diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 4695ee5b738..b17a38ad1f0 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -821,7 +821,7 @@ let
 
   cron = callPackage ../tools/system/cron { };
 
-  cudatoolkit = callPackage ../development/compilers/cudatoolkit/5.5.nix {
+  cudatoolkit5 = callPackage ../development/compilers/cudatoolkit/5.5.nix {
     python = python26;
   };
 
@@ -829,6 +829,8 @@ let
     python = python26;
   };
 
+  cudatoolkit = cudatoolkit5;
+
   curl = callPackage ../tools/networking/curl rec {
     fetchurl = fetchurlBoot;
     zlibSupport = true;