diff --git a/modules/services/yabai/default.nix b/modules/services/yabai/default.nix
index 9318ff9e..dd539fc1 100644
--- a/modules/services/yabai/default.nix
+++ b/modules/services/yabai/default.nix
@@ -14,7 +14,7 @@ let
       (if (cfg.config != {})
        then "${toYabaiConfig cfg.config}"
        else "")
-      + optionalString (cfg.extraConfig != "") cfg.extraConfig)}";
+      + optionalString (cfg.extraConfig != "") ("\n" + cfg.extraConfig + "\n"))}";
 in
 
 {
diff --git a/tests/services-yabai.nix b/tests/services-yabai.nix
index 876ba387..48f369c4 100644
--- a/tests/services-yabai.nix
+++ b/tests/services-yabai.nix
@@ -23,5 +23,6 @@ in
     echo >&2 "checking config in $conf"
     grep "yabai -m config focus_follows_mouse autoraise" $conf
     grep "yabai -m rule --add app='System Preferences' manage=off" $conf
+    if [ `cat $conf | wc -l` -eq "2" ]; then echo "yabairc correctly contains 2 lines"; else return 1; fi
   '';
 }