diff --git a/snippets/flattenObject.md b/snippets/flattenObject.md
index ce47de292..05624115e 100644
--- a/snippets/flattenObject.md
+++ b/snippets/flattenObject.md
@@ -14,8 +14,13 @@ You should always omit the second argument, `prefix`, unless you want every key
 ```js
 const flattenObject = (obj, prefix = '') =>
   Object.keys(obj).reduce((acc, k) => {
-    const pre = prefix.length ? prefix + '.' : '';
-    if (typeof obj[k] === 'object') Object.assign(acc, flattenObject(obj[k], pre + k));
+    const pre = prefix.length ? `${prefix}.` : '';
+    if (
+      typeof obj[k] === 'object' &&
+      obj[k] !== null &&
+      Object.keys(obj[k]).length > 0
+    )
+      Object.assign(acc, flattenObject(obj[k], pre + k));
     else acc[pre + k] = obj[k];
     return acc;
   }, {});
@@ -23,4 +28,4 @@ const flattenObject = (obj, prefix = '') =>
 
 ```js
 flattenObject({ a: { b: { c: 1 } }, d: 1 }); // { 'a.b.c': 1, d: 1 }
-```
\ No newline at end of file
+```