diff --git a/zsh/.zshrc b/zsh/.zshrc
index c04f0e5..75ac1b6 100644
--- a/zsh/.zshrc
+++ b/zsh/.zshrc
@@ -144,4 +144,7 @@ function nnn_cd {
 
 trap nnn_cd EXIT
 
-eval `keychain --eval --quiet --agents ssh,gpg id_rsa`
+# If no SSH agent is active, start keychain
+if [[ -z "$SSH_AUTH_SOCK" ]]; then
+  eval "$(keychain --eval --quiet --agents ssh,gpg id_rsa)"
+fi