diff --git a/default.nix b/default.nix
index 754a785..fcf4e8d 100644
--- a/default.nix
+++ b/default.nix
@@ -8,6 +8,14 @@
     cIfaceSupport = true;
   };
   
+  icon-charm-with-fortran = pkgs.callPackage ./derivation.nix {
+    inherit pkgs;
+    src = ../icon-charm;
+
+    cIfaceSupport = true;
+    fortranIfaceSupport = true;
+  };
+  
   icon-charm = pkgs.callPackage ./derivation.nix {
     inherit pkgs;
     src = ../icon-charm;