diff --git a/src/human.ts b/src/human.ts
index f60718b8..ed5706d9 100644
--- a/src/human.ts
+++ b/src/human.ts
@@ -29,13 +29,9 @@ function mergeDeep(...objects) {
     Object.keys(obj || {}).forEach((key) => {
       const pVal = prev[key];
       const oVal = obj[key];
-      if (Array.isArray(pVal) && Array.isArray(oVal)) {
-        prev[key] = pVal.concat(...oVal);
-      } else if (isObject(pVal) && isObject(oVal)) {
-        prev[key] = mergeDeep(pVal, oVal);
-      } else {
-        prev[key] = oVal;
-      }
+      if (Array.isArray(pVal) && Array.isArray(oVal)) prev[key] = pVal.concat(...oVal);
+      else if (isObject(pVal) && isObject(oVal)) prev[key] = mergeDeep(pVal, oVal);
+      else prev[key] = oVal;
     });
     return prev;
   }, {});