diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 49d325f73c5..e772f08f6f1 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -9689,7 +9689,9 @@ with pkgs;
 
   libmpc = callPackage ../development/libraries/libmpc { };
 
-  mpich2 = callPackage ../development/libraries/mpich2 { };
+  mpich2 = callPackage ../development/libraries/mpich2 {
+    gfortran = gfortran5;
+  };
 
   mstpd = callPackage ../os-specific/linux/mstpd { };