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-rw-r--r--src/org/traccar/database/DeviceManager.java5
1 files changed, 4 insertions, 1 deletions
diff --git a/src/org/traccar/database/DeviceManager.java b/src/org/traccar/database/DeviceManager.java
index 1eb90b7eb..1031c5da9 100644
--- a/src/org/traccar/database/DeviceManager.java
+++ b/src/org/traccar/database/DeviceManager.java
@@ -168,7 +168,10 @@ public class DeviceManager extends BaseObjectManager<Device> implements Identity
}
if (device.getPhone() != null && !device.getPhone().isEmpty()
&& !device.getPhone().equals(cachedDevice.getPhone())) {
- devicesByPhone.remove(cachedDevice.getPhone());
+ String phone = cachedDevice.getPhone();
+ if (phone != null && !phone.isEmpty()) {
+ devicesByPhone.remove(phone);
+ }
cachedDevice.setPhone(device.getPhone());
putPhone(cachedDevice);
}