diff --git a/rtd_phosphonetx/source/core-plugins/proteomics-optional/1/as/initialize-master-data.py b/rtd_phosphonetx/source/core-plugins/proteomics-optional/1/as/initialize-master-data.py
index 143643faf0039d7027b0a123e46cd695c7183e23..1cf319052b0a133dc7fa664bc870fdb3bfabce60 100644
--- a/rtd_phosphonetx/source/core-plugins/proteomics-optional/1/as/initialize-master-data.py
+++ b/rtd_phosphonetx/source/core-plugins/proteomics-optional/1/as/initialize-master-data.py
@@ -28,9 +28,8 @@ file_type_WIFF.setDescription('Proprieatry file format for Sciex and Agilent mas
 file_type_ZIP = tr.getOrCreateNewFileFormatType('ZIP')
 file_type_ZIP.setDescription('A zipped package')
 
-vocabulary_TREATMENT_TYPE = tr.getVocabulary('TREATMENT_TYPE')
+vocabulary_TREATMENT_TYPE = tr.getOrCreateNewVocabulary('TREATMENT_TYPE')
 
-vocabulary_TREATMENT_TYPE.addTerm(vocabulary_term_TREATMENT_TYPE_PH)
 vocabulary_term_TREATMENT_TYPE_PH = tr.createNewVocabularyTerm('PH')
 vocabulary_term_TREATMENT_TYPE_PH.setDescription(None)
 vocabulary_term_TREATMENT_TYPE_PH.setUrl(None)