diff --git a/modules/programs/fish.nix b/modules/programs/fish.nix
index 20660f54..ac3663ef 100644
--- a/modules/programs/fish.nix
+++ b/modules/programs/fish.nix
@@ -221,9 +221,11 @@ let
 
   translatedSessionVariables =
     pkgs.runCommandLocal "hm-session-vars.fish" { } ''
+      (echo "function setup_hm_session_vars;"
       ${pkgs.buildPackages.babelfish}/bin/babelfish \
-        <${config.home.sessionVariablesPackage}/etc/profile.d/hm-session-vars.sh \
-        >$out
+      <${config.home.sessionVariablesPackage}/etc/profile.d/hm-session-vars.sh
+      echo "end"
+      echo "setup_hm_session_vars") > $out
     '';
 
 in {