diff --git a/com.zsmartsystems.zigbee/src/main/java/com/zsmartsystems/zigbee/app/otaserver/ZigBeeOtaFile.java b/com.zsmartsystems.zigbee/src/main/java/com/zsmartsystems/zigbee/app/otaserver/ZigBeeOtaFile.java
index 4352d226d..5dea0128d 100644
--- a/com.zsmartsystems.zigbee/src/main/java/com/zsmartsystems/zigbee/app/otaserver/ZigBeeOtaFile.java
+++ b/com.zsmartsystems.zigbee/src/main/java/com/zsmartsystems/zigbee/app/otaserver/ZigBeeOtaFile.java
@@ -280,7 +280,7 @@ private void readOtaFile() {
 
             // The length dictates the length of the rest of the data within the sub-element in bytes. It does not
             // include the size of the Tag ID or the Length Fields.
-            long tagLength = readUnsigned32();
+            int tagLength = readUnsigned32();
             logger.debug("Reading OTA image tag {}[{}] ({} bytes long)", tagType, String.format("%04X", tagId),
                     tagLength);