diff --git a/app/metrics.yaml b/app/metrics.yaml
index 60dd4e79f..790c64493 100644
--- a/app/metrics.yaml
+++ b/app/metrics.yaml
@@ -1756,15 +1756,17 @@ tracking_protection:
   etp_setting_changed:
     type: event
     description: |
-      A user changed their tracking protection level setting to either strict or
-      standard.
+      A user changed their tracking protection level setting to either strict,
+      standard, or custom.
     extra_keys:
       etp_setting:
-        description: "The new setting for ETP: strict, standard"
+        description: "The new setting for ETP: strict, standard, custom"
     bugs:
       - https://github.com/mozilla-mobile/fenix/issues/5312
+      - https://github.com/mozilla-mobile/fenix/issues/11063
     data_reviews:
       - https://github.com/mozilla-mobile/fenix/pull/5414#issuecomment-532847188
+      - https://github.com/mozilla-mobile/fenix/pull/11383
     notification_emails:
       - fenix-core@mozilla.com
     expires: "2020-09-01"
diff --git a/app/src/main/java/org/mozilla/fenix/components/metrics/Metrics.kt b/app/src/main/java/org/mozilla/fenix/components/metrics/Metrics.kt
index 47040b186..64f0308a4 100644
--- a/app/src/main/java/org/mozilla/fenix/components/metrics/Metrics.kt
+++ b/app/src/main/java/org/mozilla/fenix/components/metrics/Metrics.kt
@@ -243,7 +243,7 @@ sealed class Event {
     }
 
     data class TrackingProtectionSettingChanged(val setting: Setting) : Event() {
-        enum class Setting { STRICT, STANDARD }
+        enum class Setting { STRICT, STANDARD, CUSTOM }
 
         override val extras: Map<TrackingProtection.etpSettingChangedKeys, String>?
             get() = hashMapOf(TrackingProtection.etpSettingChangedKeys.etpSetting to setting.name)
diff --git a/app/src/main/java/org/mozilla/fenix/settings/TrackingProtectionFragment.kt b/app/src/main/java/org/mozilla/fenix/settings/TrackingProtectionFragment.kt
index 0349c69d8..4846cd1ab 100644
--- a/app/src/main/java/org/mozilla/fenix/settings/TrackingProtectionFragment.kt
+++ b/app/src/main/java/org/mozilla/fenix/settings/TrackingProtectionFragment.kt
@@ -111,8 +111,9 @@ class TrackingProtectionFragment : PreferenceFragmentCompat() {
                     Event.TrackingProtectionSettingChanged.Setting.STANDARD
                 TrackingProtectionMode.STRICT ->
                     Event.TrackingProtectionSettingChanged.Setting.STRICT
-                TrackingProtectionMode.CUSTOM -> null
-            }?.let { setting ->
+                TrackingProtectionMode.CUSTOM ->
+                    Event.TrackingProtectionSettingChanged.Setting.CUSTOM
+            }.let { setting ->
                 metrics.track(Event.TrackingProtectionSettingChanged(setting))
             }
         }
diff --git a/docs/metrics.md b/docs/metrics.md
index 73e9a252d..a1ef8970a 100644
--- a/docs/metrics.md
+++ b/docs/metrics.md
@@ -177,7 +177,7 @@ The following metrics are added to the ping:
 | top_sites.open_in_new_tab |[event](https://mozilla.github.io/glean/book/user/metrics/event.html) |A user opens a new tab based on a top site item  |[1](https://github.com/mozilla-mobile/fenix/pull/7523)||2020-09-01 |
 | top_sites.open_in_private_tab |[event](https://mozilla.github.io/glean/book/user/metrics/event.html) |A user opens a new private tab based on a top site item  |[1](https://github.com/mozilla-mobile/fenix/pull/7523)||2020-09-01 |
 | top_sites.remove |[event](https://mozilla.github.io/glean/book/user/metrics/event.html) |A user removes a top site item  |[1](https://github.com/mozilla-mobile/fenix/pull/7523)||2020-09-01 |
-| tracking_protection.etp_setting_changed |[event](https://mozilla.github.io/glean/book/user/metrics/event.html) |A user changed their tracking protection level setting to either strict or standard.  |[1](https://github.com/mozilla-mobile/fenix/pull/5414#issuecomment-532847188)|<ul><li>etp_setting: The new setting for ETP: strict, standard</li></ul>|2020-09-01 |
+| tracking_protection.etp_setting_changed |[event](https://mozilla.github.io/glean/book/user/metrics/event.html) |A user changed their tracking protection level setting to either strict, standard, or custom.  |[1](https://github.com/mozilla-mobile/fenix/pull/5414#issuecomment-532847188), [2](https://github.com/mozilla-mobile/fenix/pull/11383)|<ul><li>etp_setting: The new setting for ETP: strict, standard, custom</li></ul>|2020-09-01 |
 | tracking_protection.etp_settings |[event](https://mozilla.github.io/glean/book/user/metrics/event.html) |A user opened tracking protection settings through settings.  |[1](https://github.com/mozilla-mobile/fenix/pull/5414#issuecomment-532847188)||2020-09-01 |
 | tracking_protection.etp_shield |[event](https://mozilla.github.io/glean/book/user/metrics/event.html) |A user pressed the tracking protection shield icon in toolbar.  |[1](https://github.com/mozilla-mobile/fenix/pull/5414#issuecomment-532847188)||2020-09-01 |
 | tracking_protection.etp_tracker_list |[event](https://mozilla.github.io/glean/book/user/metrics/event.html) |A user pressed into a list of categorized trackers in tracking protection panel.  |[1](https://github.com/mozilla-mobile/fenix/pull/5414#issuecomment-532847188)||2020-09-01 |