diff --git a/moban/constants.py b/moban/constants.py
index dd0300cc..530ab7f1 100644
--- a/moban/constants.py
+++ b/moban/constants.py
@@ -77,8 +77,6 @@
 LABEL_VERBOSE = "verbose"
 LABEL_MOBAN_ACTION_IN_PRESENT_CONTINUOUS_TENSE = "Mobanizing"
 LABEL_MOBAN_ACTION_IN_PAST_TENSE = "Mobanized"
-LABEL_MOBAN_ACTION_IN_PRESENT_CONTINUOUS_TENSE = "Mobanizing"
-LABEL_MOBAN_ACTION_IN_PAST_TENSE = "Mobanized"
 
 # error messages
 ERROR_DATA_FILE_NOT_FOUND = "Both %s and %s does not exist"