diff --git a/dot_config/private_fish/functions/fixssh.fish b/dot_config/private_fish/functions/fixssh.fish
new file mode 100644
index 0000000..036220f
--- /dev/null
+++ b/dot_config/private_fish/functions/fixssh.fish
@@ -0,0 +1,8 @@
+function fixssh -d "Fix tmux ssh agent socket after a reconnect"
+    if set -q TMUX
+        eval (tmux show-environment SSH_AUTH_SOCK | sed 's/\=/ /' | sed 's/^/set /')
+        echo "New SSH_AUTH_SOCK: $SSH_AUTH_SOCK"
+    else
+        echo "tmux not detected"
+    end
+end