diff --git a/circle.yml b/circle.yml
index 9b023df..9595f75 100644
--- a/circle.yml
+++ b/circle.yml
@@ -12,7 +12,7 @@ dependencies:
     - ls /home/ubuntu/android/
 test:
   override:
-    - ./gradlew assembleRelease crashlyticsUploadDistributionGoogleRelease -PdisablePreDex
+    - ./gradlew assembleRelease crashlyticsUploadDistributionGoogleRelease
 general:
   artifacts:
     - "phone/build/outputs/apk" # relative to the build directory
diff --git a/phone/res/values/com_crashlytics_export_strings.xml b/phone/res/values/com_crashlytics_export_strings.xml
new file mode 100644
index 0000000..c0736a1
--- /dev/null
+++ b/phone/res/values/com_crashlytics_export_strings.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8" standalone="no"?>
+<resources>
+<!--
+  This file is automatically generated by Crashlytics to uniquely 
+  identify individual builds of your Android application.
+
+  Do NOT modify, delete, or commit to source control!
+-->
+<string name="com.crashlytics.android.build_id" translatable="false">32eeddea-4df8-46bf-a44d-9be505c7a9c8</string>
+</resources>