diff --git a/py25/bacpypes/object.py b/py25/bacpypes/object.py
index 12b8d81..c5ce0ca 100755
--- a/py25/bacpypes/object.py
+++ b/py25/bacpypes/object.py
@@ -1440,7 +1440,7 @@ class EventEnrollmentObject(Object):
         , ReadableProperty('eventTimeStamps', ArrayOf(TimeStamp))
         , OptionalProperty('eventMessageTexts', ArrayOf(CharacterString))
         , OptionalProperty('eventMessageTextsConfig', ArrayOf(CharacterString))
-        , OptionalProperty('eventDetectionEnable', Boolean)
+        , ReadableProperty('eventDetectionEnable', Boolean)
         , OptionalProperty('eventAlgorithmInhibitRef', ObjectPropertyReference)
         , OptionalProperty('eventAlgorithmInhibit', Boolean)
         , OptionalProperty('timeDelayNormal', Unsigned)
diff --git a/py27/bacpypes/object.py b/py27/bacpypes/object.py
index dc09e73..ac39cc0 100755
--- a/py27/bacpypes/object.py
+++ b/py27/bacpypes/object.py
@@ -1422,7 +1422,7 @@ class EventEnrollmentObject(Object):
         , ReadableProperty('eventTimeStamps', ArrayOf(TimeStamp))
         , OptionalProperty('eventMessageTexts', ArrayOf(CharacterString))
         , OptionalProperty('eventMessageTextsConfig', ArrayOf(CharacterString))
-        , OptionalProperty('eventDetectionEnable', Boolean)
+        , ReadableProperty('eventDetectionEnable', Boolean)
         , OptionalProperty('eventAlgorithmInhibitRef', ObjectPropertyReference)
         , OptionalProperty('eventAlgorithmInhibit', Boolean)
         , OptionalProperty('timeDelayNormal', Unsigned)
diff --git a/py34/bacpypes/object.py b/py34/bacpypes/object.py
index 97b5899..9f2a4e9 100755
--- a/py34/bacpypes/object.py
+++ b/py34/bacpypes/object.py
@@ -1422,7 +1422,7 @@ class EventEnrollmentObject(Object):
         , ReadableProperty('eventTimeStamps', ArrayOf(TimeStamp))
         , OptionalProperty('eventMessageTexts', ArrayOf(CharacterString))
         , OptionalProperty('eventMessageTextsConfig', ArrayOf(CharacterString))
-        , OptionalProperty('eventDetectionEnable', Boolean)
+        , ReadableProperty('eventDetectionEnable', Boolean)
         , OptionalProperty('eventAlgorithmInhibitRef', ObjectPropertyReference)
         , OptionalProperty('eventAlgorithmInhibit', Boolean)
         , OptionalProperty('timeDelayNormal', Unsigned)