diff --git a/CHANGELOG.md b/CHANGELOG.md
index a856cb8..9e8cfc4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@
     V4.2.6 - Fixed problem with notifications in Android 13
            - Improved start-up checks for permissions
            - Improved system re-start after changing settings (but still not perfect!)
+           - Disabled the CNN algorithm by default as it is causing some false alarms (Issue #170)
     V4.2.5 - Set BLE device time if the characteristic is available.
     V4.2.4 - Added checks and a FAULT condition for Bluetooth errors in Bluetooth Data Source
     V4.2.3 - Uses 3d accelerometer data to calculate magnitude if vector magnitude is not sent from data source.
diff --git a/app/src/main/res/xml/seizure_detector_prefs.xml b/app/src/main/res/xml/seizure_detector_prefs.xml
index 1cb1e6e..98acef5 100644
--- a/app/src/main/res/xml/seizure_detector_prefs.xml
+++ b/app/src/main/res/xml/seizure_detector_prefs.xml
@@ -7,7 +7,7 @@
             android:summary="@string/OsdAlarmEnabledSummary"
             android:title="@string/OsdAlarmEnabledTitle" />
         <CheckBoxPreference
-            android:defaultValue="true"
+            android:defaultValue="false"
             android:key="CnnAlarmActive"
             android:summary="@string/CnnAlarmEnabledSummary"
             android:title="@string/CnnAlarmEnabledTitle" />
@@ -85,7 +85,7 @@
 
     <PreferenceCategory android:title="@string/ml_sd_settings_title">
         <CheckBoxPreference
-            android:defaultValue="true"
+            android:defaultValue="false"
             android:key="CnnAlarmActive"
             android:summary="@string/CnnAlarmEnabledSummary"
             android:title="@string/CnnAlarmEnabledTitle" />