1 files changed, 6 insertions, 2 deletions
diff --git a/src/main/java/org/traccar/model/ExtendedModel.java b/src/main/java/org/traccar/model/ExtendedModel.java
index 7a61eda8c..6a4f502f7 100644
--- a/src/main/java/org/traccar/model/ExtendedModel.java
+++ b/src/main/java/org/traccar/model/ExtendedModel.java
@@ -89,14 +89,18 @@ public class ExtendedModel extends BaseModel {
         }
     }
 
-    public String getString(String key) {
+    public String getString(String key, String defaultValue) {
         if (attributes.containsKey(key)) {
             return attributes.get(key).toString();
         } else {
-            return null;
+            return defaultValue;
         }
     }
 
+    public String getString(String key) {
+        return getString(key, null);
+    }
+
     public double getDouble(String key) {
         if (attributes.containsKey(key)) {
             Object value = attributes.get(key);