diff --git a/.gitignore b/.gitignore
index abff6abb..88181110 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,6 +18,7 @@ out/
 
 # Gradle files
 .gradle/
+.kotlin/
 build/
 
 # Local configuration file (sdk path, etc)
diff --git a/ultrasonic/src/test/kotlin/org/moire/ultrasonic/imageloader/CoverArtRequestHandlerTest.kt b/ultrasonic/src/test/kotlin/org/moire/ultrasonic/imageloader/CoverArtRequestHandlerTest.kt
index 4434b7bc..3cd8beec 100644
--- a/ultrasonic/src/test/kotlin/org/moire/ultrasonic/imageloader/CoverArtRequestHandlerTest.kt
+++ b/ultrasonic/src/test/kotlin/org/moire/ultrasonic/imageloader/CoverArtRequestHandlerTest.kt
@@ -1,6 +1,7 @@
 package org.moire.ultrasonic.imageloader
 
 import android.net.Uri
+import android.os.Environment
 import com.squareup.picasso.Picasso
 import com.squareup.picasso.Request
 import java.io.IOException
@@ -16,7 +17,9 @@ import org.mockito.kotlin.mock
 import org.mockito.kotlin.whenever
 import org.moire.ultrasonic.api.subsonic.SubsonicAPIClient
 import org.moire.ultrasonic.api.subsonic.response.StreamResponse
+import org.moire.ultrasonic.util.FileUtil
 import org.robolectric.RobolectricTestRunner
+import java.io.File
 
 @RunWith(RobolectricTestRunner::class)
 class CoverArtRequestHandlerTest {
@@ -55,6 +58,10 @@ class CoverArtRequestHandlerTest {
     @Test
     fun `Should throw IOException when request to api failed`() {
         val streamResponse = StreamResponse(null, null, 500)
+        FileUtil.cachedUltrasonicDirectory = File(
+            Environment.getExternalStorageDirectory(),
+            "Android/data/org.moire.ultrasonic"
+        )
 
         whenever(
             mockApiClient.toStreamResponse(any())
@@ -74,6 +81,10 @@ class CoverArtRequestHandlerTest {
             apiError = null,
             responseHttpCode = 200
         )
+        FileUtil.cachedUltrasonicDirectory = File(
+            Environment.getExternalStorageDirectory(),
+            "Android/data/org.moire.ultrasonic"
+        )
 
         whenever(
             mockApiClient.toStreamResponse(any())