diff --git a/coil-base/src/sharedTest/java/coil/util/SharedTestFunctions.kt b/coil-base/src/sharedTest/java/coil/util/SharedTestFunctions.kt
index bfa0667405..fc1dba38b5 100644
--- a/coil-base/src/sharedTest/java/coil/util/SharedTestFunctions.kt
+++ b/coil-base/src/sharedTest/java/coil/util/SharedTestFunctions.kt
@@ -16,15 +16,13 @@ import coil.size.Scale
 import okhttp3.Headers
 import okhttp3.mockwebserver.MockResponse
 import okhttp3.mockwebserver.MockWebServer
-import okio.Buffer
 import okio.buffer
 import okio.source
 
 fun createMockWebServer(context: Context, vararg images: String): MockWebServer {
     return MockWebServer().apply {
         images.forEach { image ->
-            val buffer = Buffer()
-            context.assets.open(image).source().buffer().readAll(buffer)
+            val buffer = context.assets.open(image).source().buffer().buffer
             enqueue(MockResponse().setBody(buffer))
         }
         start()