diff --git a/src/org/thoughtcrime/securesms/notifications/MessageNotifier.java b/src/org/thoughtcrime/securesms/notifications/MessageNotifier.java
index 14fd3078f..6f376bba3 100644
--- a/src/org/thoughtcrime/securesms/notifications/MessageNotifier.java
+++ b/src/org/thoughtcrime/securesms/notifications/MessageNotifier.java
@@ -49,7 +49,7 @@ import org.thoughtcrime.securesms.service.KeyCachingService;
 import org.thoughtcrime.securesms.util.ServiceUtil;
 import org.thoughtcrime.securesms.util.SpanUtil;
 import org.thoughtcrime.securesms.util.TextSecurePreferences;
-import org.whispersystems.signalservice.internal.util.Util;
+import org.thoughtcrime.securesms.util.Util;
 
 import java.util.HashSet;
 import java.util.List;
diff --git a/src/org/thoughtcrime/securesms/util/Util.java b/src/org/thoughtcrime/securesms/util/Util.java
index ae74c9a5f..03dd389d2 100644
--- a/src/org/thoughtcrime/securesms/util/Util.java
+++ b/src/org/thoughtcrime/securesms/util/Util.java
@@ -474,4 +474,12 @@ public class Util {
 
     return new DecimalFormat("#,##0.#").format(sizeBytes/Math.pow(1024, digitGroups)) + " " + units[digitGroups];
   }
+
+  public static void sleep(long millis) {
+    try {
+      Thread.sleep(millis);
+    } catch (InterruptedException e) {
+      throw new AssertionError(e);
+    }
+  }
 }