diff --git a/webrtc/examples/androidapp/src/org/appspot/apprtc/PeerConnectionClient.java b/webrtc/examples/androidapp/src/org/appspot/apprtc/PeerConnectionClient.java
index 8b4f17c613..532c016612 100644
--- a/webrtc/examples/androidapp/src/org/appspot/apprtc/PeerConnectionClient.java
+++ b/webrtc/examples/androidapp/src/org/appspot/apprtc/PeerConnectionClient.java
@@ -518,6 +518,7 @@ public class PeerConnectionClient {
       try {
         aecDumpFileDescriptor = ParcelFileDescriptor.open(
             new File(Environment.getExternalStorageDirectory().getPath()
+                + File.separator
                 + "Download/audio.aecdump"),
                 ParcelFileDescriptor.MODE_READ_WRITE |
                 ParcelFileDescriptor.MODE_CREATE |