diff --git a/modules/swagger-codegen/src/main/resources/Java/ApiClient.mustache b/modules/swagger-codegen/src/main/resources/Java/ApiClient.mustache
index fb4351d444d..79b44594816 100644
--- a/modules/swagger-codegen/src/main/resources/Java/ApiClient.mustache
+++ b/modules/swagger-codegen/src/main/resources/Java/ApiClient.mustache
@@ -356,7 +356,7 @@ public class ApiClient {
       }
       else if(String.class.equals(cls)) {
         if(json != null && json.startsWith("\"") && json.endsWith("\"") && json.length() > 1)
-          return json.substring(1, json.length() - 2);
+          return json.substring(1, json.length() - 1);
         else
           return json;
       }