diff --git a/proguard-test.flags b/proguard-test.flags
index 5c208fb3f..26d7deabf 100644
--- a/proguard-test.flags
+++ b/proguard-test.flags
@@ -94,5 +94,5 @@
 -keepclasseswithmembers class com.android.emailcommon.utility.EmailAsyncTask$Tracker {
   <init>();
   *** getTaskCountForTest();
-  *** containsTaskForTest();
+  *** containsTaskForTest(com.android.emailcommon.utility.EmailAsyncTask);
 }