diff --git a/src/notification.c b/src/notification.c
index 1cea286..9e5dd9a 100644
--- a/src/notification.c
+++ b/src/notification.c
@@ -150,17 +150,11 @@ const char *notification_urgency_to_string(enum urgency urgency)
 }
 
 /*
- * Helper function to compare to given
+ * Helper function to compare two given
  * notifications.
  */
-int notification_cmp(const void *va, const void *vb)
+int notification_cmp(const notification *a, const notification *b)
 {
-        notification *a = (notification *) va;
-        notification *b = (notification *) vb;
-
-        if (!settings.sort)
-                return 1;
-
         if (a->urgency != b->urgency) {
                 return b->urgency - a->urgency;
         } else {
@@ -174,7 +168,13 @@ int notification_cmp(const void *va, const void *vb)
  */
 int notification_cmp_data(const void *va, const void *vb, void *data)
 {
-        return notification_cmp(va, vb);
+        notification *a = (notification *) va;
+        notification *b = (notification *) vb;
+
+        if (!settings.sort)
+                return 1;
+
+        return notification_cmp(a, b);
 }
 
 int notification_is_duplicate(const notification *a, const notification *b)
diff --git a/src/notification.h b/src/notification.h
index a866214..fa1de64 100644
--- a/src/notification.h
+++ b/src/notification.h
@@ -89,8 +89,8 @@ void notification_init(notification *n);
 void actions_free(Actions *a);
 void rawimage_free(RawImage *i);
 void notification_free(notification *n);
-int notification_cmp(const void *a, const void *b);
-int notification_cmp_data(const void *a, const void *b, void *data);
+int notification_cmp(const notification *a, const notification *b);
+int notification_cmp_data(const void *va, const void *vb, void *data);
 int notification_is_duplicate(const notification *a, const notification *b);
 void notification_run_script(notification *n);
 void notification_print(notification *n);