diff --git a/app/src/main/java/com/todoroo/astrid/service/TaskCreator.java b/app/src/main/java/com/todoroo/astrid/service/TaskCreator.java
index f484750a1..f21e5cc38 100644
--- a/app/src/main/java/com/todoroo/astrid/service/TaskCreator.java
+++ b/app/src/main/java/com/todoroo/astrid/service/TaskCreator.java
@@ -19,6 +19,7 @@ import com.todoroo.astrid.utility.TitleParser;
 import java.util.ArrayList;
 import java.util.Map;
 import javax.inject.Inject;
+import org.tasks.BuildConfig;
 import org.tasks.R;
 import org.tasks.data.CaldavDao;
 import org.tasks.data.CaldavTask;
@@ -108,6 +109,8 @@ public class TaskCreator {
       } else if (remoteList instanceof CaldavFilter) {
         caldavDao.insert(
             task, new CaldavTask(task.getId(), ((CaldavFilter) remoteList).getUuid()), addToTop);
+      } else if (BuildConfig.DEBUG) {
+        throw new IllegalStateException();
       }
     }