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-rw-r--r--pkgs/development/compilers/jdk/jdk7-linux.nix2
1 files changed, 1 insertions, 1 deletions
diff --git a/pkgs/development/compilers/jdk/jdk7-linux.nix b/pkgs/development/compilers/jdk/jdk7-linux.nix
index e6e8bda02d4f..6e1fec4d18ca 100644
--- a/pkgs/development/compilers/jdk/jdk7-linux.nix
+++ b/pkgs/development/compilers/jdk/jdk7-linux.nix
@@ -36,7 +36,7 @@ let
 in
 
 stdenv.mkDerivation rec {
-  patchversion = 51;
+  patchversion = "51";
 
   name =
     if installjdk then "jdk-1.7.0_${patchversion}" else "jre-1.7.0_${patchversion}";