diff --git a/src/com/android/email/provider/EmailProvider.java b/src/com/android/email/provider/EmailProvider.java
index f0e78d24f..f940b23aa 100644
--- a/src/com/android/email/provider/EmailProvider.java
+++ b/src/com/android/email/provider/EmailProvider.java
@@ -885,7 +885,7 @@ public class EmailProvider extends ContentProvider {
             case HOSTAUTH_ID:
                 return "vnd.android.cursor.item/email-hostauth";
             default:
-                throw new IllegalArgumentException("Unknown URI " + uri);
+                return null;
         }
     }