diff --git a/libraries/matrix/test/build.gradle.kts b/libraries/matrix/test/build.gradle.kts
index ccb1a37a25..63836d857a 100644
--- a/libraries/matrix/test/build.gradle.kts
+++ b/libraries/matrix/test/build.gradle.kts
@@ -19,7 +19,6 @@ dependencies {
     api(projects.libraries.matrix.api)
     api(libs.coroutines.core)
     implementation(libs.coroutines.test)
-    implementation(projects.libraries.matrix.impl)
     implementation(projects.services.analytics.api)
     implementation(projects.tests.testutils)
     implementation(libs.kotlinx.collections.immutable)
diff --git a/libraries/matrix/test/src/main/kotlin/io/element/android/libraries/matrix/test/mxc/FakeMxcTools.kt b/libraries/matrix/test/src/main/kotlin/io/element/android/libraries/matrix/test/mxc/FakeMxcTools.kt
index c348cd351c..d49a1cc22d 100644
--- a/libraries/matrix/test/src/main/kotlin/io/element/android/libraries/matrix/test/mxc/FakeMxcTools.kt
+++ b/libraries/matrix/test/src/main/kotlin/io/element/android/libraries/matrix/test/mxc/FakeMxcTools.kt
@@ -8,8 +8,12 @@
 package io.element.android.libraries.matrix.test.mxc
 
 import io.element.android.libraries.matrix.api.mxc.MxcTools
-import io.element.android.libraries.matrix.impl.mxc.DefaultMxcTools
+import io.element.android.tests.testutils.lambda.lambdaError
 
 class FakeMxcTools(
-    private val delegate: MxcTools = DefaultMxcTools()
-) : MxcTools by delegate
+    private val mxcUri2FilePathResult: (String) -> String? = { lambdaError() }
+) : MxcTools {
+    override fun mxcUri2FilePath(mxcUri: String): String? {
+        return mxcUri2FilePathResult(mxcUri)
+    }
+}
diff --git a/libraries/voiceplayer/impl/src/test/kotlin/io/element/android/libraries/voiceplayer/impl/DefaultVoiceMessageMediaRepoTest.kt b/libraries/voiceplayer/impl/src/test/kotlin/io/element/android/libraries/voiceplayer/impl/DefaultVoiceMessageMediaRepoTest.kt
index 5df259fb5b..fad530a3e8 100644
--- a/libraries/voiceplayer/impl/src/test/kotlin/io/element/android/libraries/voiceplayer/impl/DefaultVoiceMessageMediaRepoTest.kt
+++ b/libraries/voiceplayer/impl/src/test/kotlin/io/element/android/libraries/voiceplayer/impl/DefaultVoiceMessageMediaRepoTest.kt
@@ -32,6 +32,9 @@ class DefaultVoiceMessageMediaRepoTest {
         val repo = createDefaultVoiceMessageMediaRepo(
             temporaryFolder = temporaryFolder,
             matrixMediaLoader = matrixMediaLoader,
+            mxcUri2FilePathResult = {
+                "matrix.org/1234567890abcdefg"
+            },
         )
 
         repo.getMediaFile().let { result ->
@@ -76,6 +79,9 @@ class DefaultVoiceMessageMediaRepoTest {
         val repo = createDefaultVoiceMessageMediaRepo(
             temporaryFolder = temporaryFolder,
             matrixMediaLoader = matrixMediaLoader,
+            mxcUri2FilePathResult = {
+                "matrix.org/1234567890abcdefg"
+            },
         )
 
         repo.getMediaFile().let { result ->
@@ -98,6 +104,9 @@ class DefaultVoiceMessageMediaRepoTest {
         val repo = createDefaultVoiceMessageMediaRepo(
             temporaryFolder = temporaryFolder,
             matrixMediaLoader = matrixMediaLoader,
+            mxcUri2FilePathResult = {
+                "matrix.org/1234567890abcdefg"
+            },
         )
 
         repo.getMediaFile().let { result ->
@@ -128,10 +137,13 @@ class DefaultVoiceMessageMediaRepoTest {
 private fun createDefaultVoiceMessageMediaRepo(
     temporaryFolder: TemporaryFolder,
     matrixMediaLoader: MatrixMediaLoader = FakeMatrixMediaLoader(),
+    mxcUri2FilePathResult: (String) -> String? = { null },
     mxcUri: String = MXC_URI,
 ) = DefaultVoiceMessageMediaRepo(
     cacheDir = temporaryFolder.root,
-    mxcTools = FakeMxcTools(),
+    mxcTools = FakeMxcTools(
+        mxcUri2FilePathResult = mxcUri2FilePathResult,
+    ),
     matrixMediaLoader = matrixMediaLoader,
     mediaSource = MediaSource(
         url = mxcUri,