diff --git a/InternalPythonModules/android/TskCallLogsParser.py b/InternalPythonModules/android/TskCallLogsParser.py
index b4ab57e6a5..6086073b02 100644
--- a/InternalPythonModules/android/TskCallLogsParser.py
+++ b/InternalPythonModules/android/TskCallLogsParser.py
@@ -49,10 +49,10 @@ class TskCallLogsParser(ResultSetIterator):
         return self._DEFAULT_DIRECTION 
 
     def get_phone_number_from(self):
-        return None
+        return self._DEFAULT_STRING
 
     def get_phone_number_to(self):
-        return None
+        return self._DEFAULT_STRING
 
     def get_call_start_date_time(self):
         return self._DEFAULT_LONG 
diff --git a/InternalPythonModules/android/TskMessagesParser.py b/InternalPythonModules/android/TskMessagesParser.py
index 6cf5fbf651..3887afd8b1 100644
--- a/InternalPythonModules/android/TskMessagesParser.py
+++ b/InternalPythonModules/android/TskMessagesParser.py
@@ -51,10 +51,10 @@ class TskMessagesParser(ResultSetIterator):
         return self._DEFAULT_COMMUNICATION_DIRECTION
 
     def get_phone_number_from(self):
-        return None
+        return self._DEFAULT_TEXT
 
     def get_phone_number_to(self):
-        return None
+        return self._DEFAULT_TEXT
 
     def get_message_date_time(self):
         return self._DEFAULT_LONG