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-rw-r--r--nixos/modules/programs/fish.nix2
1 files changed, 1 insertions, 1 deletions
diff --git a/nixos/modules/programs/fish.nix b/nixos/modules/programs/fish.nix
index 622d2f96fe41..87f6816e4ac0 100644
--- a/nixos/modules/programs/fish.nix
+++ b/nixos/modules/programs/fish.nix
@@ -10,7 +10,7 @@ let
 
   fishAliases = concatStringsSep "\n" (
     mapAttrsFlatten (k: v: "alias ${k} ${escapeShellArg v}")
-      (filterAttrs (k: v: !isNull v) cfg.shellAliases)
+      (filterAttrs (k: v: v != null) cfg.shellAliases)
   );
 
 in