diff --git a/nixos/modules/services/matrix/appservice-irc.nix b/nixos/modules/services/matrix/appservice-irc.nix
index c7cd341a9229..1360969203b5 100644
--- a/nixos/modules/services/matrix/appservice-irc.nix
+++ b/nixos/modules/services/matrix/appservice-irc.nix
@@ -228,7 +228,7 @@ in
           sed -i "s/^hs_token:.*$/$hs_token/g" ${registrationFile}
           sed -i "s/^as_token:.*$/$as_token/g" ${registrationFile}
         fi
-        if ! [ -f "${cfg.settings.ircService.mediaProxy.signingKeyPath}"]; then
+        if ! [ -f "${cfg.settings.ircService.mediaProxy.signingKeyPath}" ]; then
           ${lib.getExe pkgs.nodejs} ${pkg}/lib/generate-signing-key.js > "${cfg.settings.ircService.mediaProxy.signingKeyPath}"
         fi
         # Allow synapse access to the registration