diff --git a/package.json b/package.json
index c5ec456..fe9fd71 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "@sharkitek/core",
-	"version": "2.1.1",
+	"version": "2.1.2",
 	"description": "Sharkitek core models library.",
 	"keywords": [
 		"sharkitek",
diff --git a/src/Model/Types/DecimalType.ts b/src/Model/Types/DecimalType.ts
index 6849999..aa199c5 100644
--- a/src/Model/Types/DecimalType.ts
+++ b/src/Model/Types/DecimalType.ts
@@ -12,7 +12,7 @@ export class DecimalType extends Type<string, number>
 
 	serialize(value: number): string
 	{
-		return value.toString();
+		return value?.toString();
 	}
 }