diff --git a/common/djangoapps/util/model_utils.py b/common/djangoapps/util/model_utils.py
index da885ff078..9f6fb1b7b3 100644
--- a/common/djangoapps/util/model_utils.py
+++ b/common/djangoapps/util/model_utils.py
@@ -114,7 +114,7 @@ def truncate_fields(old_value, new_value):
     """
     # Compute the maximum value length so that two copies can fit into the maximum event size
     # in addition to all the other fields recorded.
-    max_value_length = settings.TRACK_MAX_EVENT / 4
+    max_value_length = settings.TRACK_MAX_EVENT // 4
 
     serialized_old_value, old_was_truncated = _get_truncated_setting_value(old_value, max_length=max_value_length)
     serialized_new_value, new_was_truncated = _get_truncated_setting_value(new_value, max_length=max_value_length)