diff --git a/libraries/matrix/impl/src/test/kotlin/io/element/android/libraries/matrix/impl/analytics/UtdTrackerTest.kt b/libraries/matrix/impl/src/test/kotlin/io/element/android/libraries/matrix/impl/analytics/UtdTrackerTest.kt
index 994c9a339c..62147d182c 100644
--- a/libraries/matrix/impl/src/test/kotlin/io/element/android/libraries/matrix/impl/analytics/UtdTrackerTest.kt
+++ b/libraries/matrix/impl/src/test/kotlin/io/element/android/libraries/matrix/impl/analytics/UtdTrackerTest.kt
@@ -9,10 +9,10 @@ package io.element.android.libraries.matrix.impl.analytics
 
 import com.google.common.truth.Truth.assertThat
 import im.vector.app.features.analytics.plan.Error
+import io.element.android.libraries.matrix.impl.fixtures.factories.aRustUnableToDecryptInfo
 import io.element.android.libraries.matrix.test.AN_EVENT_ID
 import io.element.android.services.analytics.test.FakeAnalyticsService
 import org.junit.Test
-import org.matrix.rustcomponents.sdk.UnableToDecryptInfo
 import uniffi.matrix_sdk_crypto.UtdCause
 
 class UtdTrackerTest {
@@ -21,7 +21,7 @@ class UtdTrackerTest {
         val fakeAnalyticsService = FakeAnalyticsService()
         val sut = UtdTracker(fakeAnalyticsService)
         sut.onUtd(
-            UnableToDecryptInfo(
+            aRustUnableToDecryptInfo(
                 eventId = AN_EVENT_ID.value,
                 timeToDecryptMs = null,
                 cause = UtdCause.UNKNOWN,
@@ -46,7 +46,7 @@ class UtdTrackerTest {
         val fakeAnalyticsService = FakeAnalyticsService()
         val sut = UtdTracker(fakeAnalyticsService)
         sut.onUtd(
-            UnableToDecryptInfo(
+            aRustUnableToDecryptInfo(
                 eventId = AN_EVENT_ID.value,
                 timeToDecryptMs = 123.toULong(),
                 cause = UtdCause.UNKNOWN,
@@ -71,7 +71,7 @@ class UtdTrackerTest {
         val fakeAnalyticsService = FakeAnalyticsService()
         val sut = UtdTracker(fakeAnalyticsService)
         sut.onUtd(
-            UnableToDecryptInfo(
+            aRustUnableToDecryptInfo(
                 eventId = AN_EVENT_ID.value,
                 timeToDecryptMs = 123.toULong(),
                 cause = UtdCause.SENT_BEFORE_WE_JOINED,
@@ -96,7 +96,7 @@ class UtdTrackerTest {
         val fakeAnalyticsService = FakeAnalyticsService()
         val sut = UtdTracker(fakeAnalyticsService)
         sut.onUtd(
-            UnableToDecryptInfo(
+            aRustUnableToDecryptInfo(
                 eventId = AN_EVENT_ID.value,
                 timeToDecryptMs = 123.toULong(),
                 cause = UtdCause.UNSIGNED_DEVICE,
@@ -119,7 +119,7 @@ class UtdTrackerTest {
         val fakeAnalyticsService = FakeAnalyticsService()
         val sut = UtdTracker(fakeAnalyticsService)
         sut.onUtd(
-            UnableToDecryptInfo(
+            aRustUnableToDecryptInfo(
                 eventId = AN_EVENT_ID.value,
                 timeToDecryptMs = 123.toULong(),
                 cause = UtdCause.VERIFICATION_VIOLATION,
diff --git a/libraries/matrix/impl/src/test/kotlin/io/element/android/libraries/matrix/impl/fixtures/factories/UnableToDecryptInfo.kt b/libraries/matrix/impl/src/test/kotlin/io/element/android/libraries/matrix/impl/fixtures/factories/UnableToDecryptInfo.kt
new file mode 100644
index 0000000000..668fd22b30
--- /dev/null
+++ b/libraries/matrix/impl/src/test/kotlin/io/element/android/libraries/matrix/impl/fixtures/factories/UnableToDecryptInfo.kt
@@ -0,0 +1,23 @@
+/*
+ * Copyright 2024 New Vector Ltd.
+ *
+ * SPDX-License-Identifier: AGPL-3.0-only
+ * Please see LICENSE in the repository root for full details.
+ */
+
+package io.element.android.libraries.matrix.impl.fixtures.factories
+
+import org.matrix.rustcomponents.sdk.UnableToDecryptInfo
+import uniffi.matrix_sdk_crypto.UtdCause
+
+internal fun aRustUnableToDecryptInfo(
+    eventId: String,
+    timeToDecryptMs: ULong?,
+    cause: UtdCause,
+): UnableToDecryptInfo {
+    return UnableToDecryptInfo(
+        eventId = eventId,
+        timeToDecryptMs = timeToDecryptMs,
+        cause = cause,
+    )
+}