diff --git a/pkgs/os-specific/linux/zen-kernel/src-for-2.6.31-zen5.nix b/pkgs/os-specific/linux/zen-kernel/src-for-2.6.31-zen5.nix
index 777edc5f0d05..2d06b7298076 100644
--- a/pkgs/os-specific/linux/zen-kernel/src-for-2.6.31-zen5.nix
+++ b/pkgs/os-specific/linux/zen-kernel/src-for-2.6.31-zen5.nix
@@ -4,6 +4,5 @@ rec {
    hash="86e254d1aab17a66d7f5a83d93430b11dbeb95be1ee06f1d6a4c36219e4dfaf4";
    rev="cd9caea74b8f90e8dded45a93a173f0f5c5aef25";
    url="git://zen-kernel.org/kernel/zen-stable.git";
-  
-  
+   depth = "500";
 }
diff --git a/pkgs/os-specific/linux/zen-kernel/src-for-zen-stable.nix b/pkgs/os-specific/linux/zen-kernel/src-for-zen-stable.nix
index 4a01d0137af9..9db52a590496 100644
--- a/pkgs/os-specific/linux/zen-kernel/src-for-zen-stable.nix
+++ b/pkgs/os-specific/linux/zen-kernel/src-for-zen-stable.nix
@@ -4,6 +4,6 @@ rec {
    hash="f5c86214424c8a7202c2dd9bbbd800561940af00800edb8afab080a73c185bca";
    rev="66a44aa93959818bdb8153fea27b0992197ebc54";
    url="git://zen-kernel.org/kernel/zen-stable.git";
-  
+   depth = "500";
   
 }
diff --git a/pkgs/os-specific/linux/zen-kernel/src-info-for-zen-stable.nix b/pkgs/os-specific/linux/zen-kernel/src-info-for-zen-stable.nix
index e71297b146db..f19e47e35054 100644
--- a/pkgs/os-specific/linux/zen-kernel/src-info-for-zen-stable.nix
+++ b/pkgs/os-specific/linux/zen-kernel/src-info-for-zen-stable.nix
@@ -3,4 +3,6 @@
   rev = "origin/master";
   baseName = "zen-linux";
   method = "fetchgit";
+  extraVars = "depth";
+  eval_depth = "depth=500";
 }