diff --git a/package.json b/package.json
index 49893b1..2133daa 100644
--- a/package.json
+++ b/package.json
@@ -32,7 +32,6 @@
   },
   "homepage": "https://github.com/lucaspalomodevelop/JSSTE#readme",
   "dependencies": {
-    "typechecker": "^7.18.0"
   },
   "engines": {
     "node": ">= 0.10.0"
diff --git a/src/jsonMerger.js b/src/jsonMerger.js
index e73d9f3..6159233 100644
--- a/src/jsonMerger.js
+++ b/src/jsonMerger.js
@@ -1,12 +1,10 @@
-const checker = require("typechecker");
-
 function mergeJson(org, ext) {
   // let placeholder = undefined;
 
-  if (!checker.isObject(org)) {
+  if (!(typeof org === 'object' && org !== null)) {
     org = JSON.parse(org);
   }
-  if (!checker.isObject(ext)) {
+  if (!(typeof ext === 'object' && ext !== null)) {
     ext = JSON.parse(ext);
   }