diff --git a/mozilla-mobile/fenix/app/src/main/res/values/strings.xml b/mozilla-mobile/fenix/app/src/main/res/values/strings.xml
index 9286b3fa306..1002234cfd9 100644
--- a/mozilla-mobile/fenix/app/src/main/res/values/strings.xml
+++ b/mozilla-mobile/fenix/app/src/main/res/values/strings.xml
@@ -581,7 +581,7 @@
     <!-- Onboarding label for 'Save and continue' button, used by Nimbus experiments. -->
     <string name="onboarding_save_and_continue_button">Save and continue</string>
     <!-- Onboarding toolbar selection card label for 'skip' button, used by Nimbus experiments. -->
-    <string name="onboarding_customize_toolbar_skip_button" tools:ignore="UnusedResources">Skip</string>
+    <string name="onboarding_customize_toolbar_skip_button" moz:removedIn="135" tools:ignore="UnusedResources">Skip</string>
     <!-- Onboarding toolbar selection card label for 'top' option, used by Nimbus experiments. -->
     <string name="onboarding_customize_toolbar_top_option">Top</string>
     <!-- Onboarding toolbar selection card label for 'bottom' option, used by Nimbus experiments. -->
@@ -603,7 +603,7 @@
     <!-- Onboarding label for 'Save and start browsing' button, used by Nimbus experiments. -->
     <string name="onboarding_save_and_start_button">Save and start browsing</string>
     <!-- Onboarding theme selection card label for 'skip' button, used by Nimbus experiments. -->
-    <string name="onboarding_customize_theme_skip_button" tools:ignore="UnusedResources">Skip</string>
+    <string name="onboarding_customize_theme_skip_button" moz:removedIn="135" tools:ignore="UnusedResources">Skip</string>
     <!-- Onboarding theme selection card label for 'dark' option, used by Nimbus experiments. -->
     <string name="onboarding_customize_theme_dark_option">Dark</string>
     <!-- Onboarding theme selection card label for 'light' option, used by Nimbus experiments. -->