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-rw-r--r--src/main/java/org/traccar/model/ExtendedModel.java4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/main/java/org/traccar/model/ExtendedModel.java b/src/main/java/org/traccar/model/ExtendedModel.java
index 9da9c7529..0a0923ba1 100644
--- a/src/main/java/org/traccar/model/ExtendedModel.java
+++ b/src/main/java/org/traccar/model/ExtendedModel.java
@@ -91,8 +91,8 @@ public class ExtendedModel extends BaseModel {
public String getString(String key, String defaultValue) {
if (attributes.containsKey(key)) {
- Object value = attributes.get(key);
- return value != null ? value.toString() : value;
+ Object value = attributes.containsKey(key);
+ return value != null ? value.toString() : null;
} else {
return defaultValue;
}