diff --git a/modules/swaync/check.nix b/modules/swaync/check.nix
new file mode 100644
index 0000000..c56fb59
--- /dev/null
+++ b/modules/swaync/check.nix
@@ -0,0 +1,14 @@
+{ self, pkgs }:
+let
+  swayncWrapped =
+    (self.wrapperModules.swaync.apply {
+      inherit pkgs;
+      configOptions = {
+        keyboard-shortcuts = false;
+      };
+    }).wrapper;
+in
+pkgs.runCommand "test-swaync" { nativeBuildInputs = [ swayncWrapped ]; } ''
+  swaync -v | grep "${swayncWrapped.version}"
+  touch $out
+''
diff --git a/modules/swaync/module.nix b/modules/swaync/module.nix
index ba40d84..68fc176 100644
--- a/modules/swaync/module.nix
+++ b/modules/swaync/module.nix
@@ -5,7 +5,7 @@
   ...
 }:
 let
-  jsonFmt = config.pkgs.formats.json;
+  jsonFmt = config.pkgs.formats.json { };
 in
 {
   _class = "wrapper";
@@ -14,7 +14,7 @@ in
       type = jsonFmt.type;
       default = { };
       description = ''
-        SwayNotificationCenter configuration file. 
+        SwayNotificationCenter configuration file.
         See {manpage}`swaync(5)`
       '';
     };