diff --git a/fish/config.fish b/fish/config.fish
index 0b17075..75b89c3 100644
--- a/fish/config.fish
+++ b/fish/config.fish
@@ -21,7 +21,13 @@ if test -f ~/.nix-profile/etc/profile.d/nix.sh
     for line in (bash -c 'source $0; for name in "${!NIX_@}"; do printf "%s=%s\n" "$name" "${!name}"; done' ~/.nix-profile/etc/profile.d/nix.sh)
         set -gx (string split -m 1 = $line)
     end
-    set PATH ~/.nix-profile/bin $PATH 2>/dev/null
+    if functions -q fish_add_path
+        fish_add_path -gP ~/.nix-profile/bin
+    else
+        if not contains -- ~/.nix-profile/bin $PATH
+            set PATH ~/.nix-profile/bin $PATH 2>/dev/null
+        end
+    end
 end
 
 # Fish package manager