diff --git a/package.json b/package.json
index a4c20ae..d020ac6 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@coinsamba/js-exchanges-connector",
   "description": "Collection of JavaScript implementations of cryptocurrency exchange APIs",
-  "version": "1.2.5",
+  "version": "1.2.6",
   "repository": "git@github.com:coinsambacom/js-exchanges-connector.git",
   "author": "Gustavo <gustavo@obex.pw>",
   "license": "MIT",
diff --git a/src/utils/isNumber.ts b/src/utils/isNumber.ts
index 690b38e..d53724d 100644
--- a/src/utils/isNumber.ts
+++ b/src/utils/isNumber.ts
@@ -1 +1,2 @@
-export const isNumber = (value: any) => !Number.isNaN(Number(value));
+export const isNumber = (value: any) =>
+  value != null && !Number.isNaN(Number(value));