diff --git a/igsparser/msd.py b/igsparser/msd.py
index c250562..eb20b2c 100644
--- a/igsparser/msd.py
+++ b/igsparser/msd.py
@@ -236,7 +236,7 @@ def fieldAccels(self, idx):
         0x22: {'name': 'iRS02RG', 'fields': ['fieldAccel'], 'events': ['hall']},
         0x23: {'name': 'iBS03NT', 'fields': ['fieldDummy', 'fieldTempExt', 'fieldUser'], 'events': []},
         0x24: {'name': 'iBS03AD', 'fields': ['fieldDummy', 'fieldVoltage', 'fieldUser'], 'events': []},
-        0x25: {'name': 'iBS03DI', 'fields': ['fieldDummy', 'fieldDummy', 'fieldUser'], 'events': ['din']},
+        0x25: {'name': 'iBS03DI', 'fields': ['fieldDummy', 'fieldCounter', 'fieldUser'], 'events': ['din']},
         0x30: {'name': 'iBS05', 'fields': ['fieldDummy', 'fieldDummy', 'fieldUser'], 'events': ['button']},
         0x31: {'name': 'iBS05H', 'fields': ['fieldDummy', 'fieldDummy', 'fieldUser'], 'events': ['button', 'hall']},
         0x32: {'name': 'iBS05T', 'fields': ['fieldTemp', 'fieldDummy', 'fieldUser'], 'events': ['button']},
diff --git a/tests/test_ibs03.py b/tests/test_ibs03.py
index ad2e972..6916e84 100644
--- a/tests/test_ibs03.py
+++ b/tests/test_ibs03.py
@@ -185,4 +185,5 @@ def handler(data, index):
         assert hasattr(msd, 'temperature') == False
         assert msd.events.din is True
         assert msd.user == 100
+        assert msd.counter == 2566
     MessageParser.parse(message, handler)