diff --git a/tests/codecs/test_iot_ext_codec.py b/tests/codecs/test_iot_ext_codec.py
index 273482a..d5bdc05 100644
--- a/tests/codecs/test_iot_ext_codec.py
+++ b/tests/codecs/test_iot_ext_codec.py
@@ -116,7 +116,7 @@
     ),
 ]
 
-MSG_EXAMPLE_WITH_CRC = """t|123123123123,d|device_one,m|value=d:123.321,c|70AA"""
+MSG_EXAMPLE_WITH_CRC = """t|123123123123,d|device_one,m|value=d:123.321,c|4C5A"""
 
 MSG_EXAMPLE_WITH_CRC_AS_DATA_STRUCTS = [
     Item(kind=ItemTypes.TIMESTAMP_MILIS, name="123123123123", metric=None),
@@ -128,7 +128,7 @@
             data_type=MetricDataTypes.DECIMAL, value=Decimal("123.321")
         ),
     ),
-    Item(kind=ItemTypes.CRC, name="70AA", metric=None),
+    Item(kind=ItemTypes.CRC, name="4C5A", metric=None),
 ]