diff --git a/mobile/android/geckoview/src/androidTest/java/org/mozilla/geckoview/test/SelectionActionDelegateTest.kt b/mobile/android/geckoview/src/androidTest/java/org/mozilla/geckoview/test/SelectionActionDelegateTest.kt
index 63222e9732cb..0c7ac3da149f 100644
--- a/mobile/android/geckoview/src/androidTest/java/org/mozilla/geckoview/test/SelectionActionDelegateTest.kt
+++ b/mobile/android/geckoview/src/androidTest/java/org/mozilla/geckoview/test/SelectionActionDelegateTest.kt
@@ -341,6 +341,8 @@ class SelectionActionDelegateTest : BaseSessionTest() {
     }
 
     @Test fun compareClientRect() {
+        // TODO: Bug 1829615
+        assumeThat(sessionRule.env.isFission, equalTo(false))
         val jsCssReset = """(function() {
             document.querySelector('$id').style.display = "block";
             document.querySelector('$id').style.border = "0";