diff --git a/sensospot_data/columns.py b/sensospot_data/columns.py
index b41d608..6f3289a 100644
--- a/sensospot_data/columns.py
+++ b/sensospot_data/columns.py
@@ -40,7 +40,7 @@ META_DATA_EXPOSURE_ID = "Exposure.Id"
 META_DATA_PARAMETERS_CHANNEL = "Parameters.Channel"
 META_DATA_PARAMETERS_TIME = "Parameters.Time"
 
-RAW_DATA_COLUMN_SET = {
+PARSED_DATA_COLUMN_SET = {
     RAW_DATA_POS_X,
     RAW_DATA_POS_Y,
     RAW_DATA_BKG_MEAN,
diff --git a/sensospot_data/parser.py b/sensospot_data/parser.py
index d7773d7..edd05c0 100755
--- a/sensospot_data/parser.py
+++ b/sensospot_data/parser.py
@@ -13,7 +13,7 @@ from .columns import (
     RAW_DATA_POS_ID,
     META_DATA_WELL_ROW,
     META_DATA_WELL_NAME,
-    RAW_DATA_COLUMN_SET,
+    PARSED_DATA_COLUMN_SET,
     META_DATA_EXPOSURE_ID,
     META_DATA_WELL_COLUMN,
     RAW_DATA_NORMALIZATION_MAP,
@@ -66,7 +66,7 @@ def _extract_measurement_info(data_file):
 def _cleanup_data_columns(data_frame):
     """ renames some data columns for consistency and drops unused columns """
     renamed = data_frame.rename(columns=RAW_DATA_COLUMNS_RENAME_MAP)
-    surplus_columns = set(renamed.columns) - RAW_DATA_COLUMN_SET
+    surplus_columns = set(renamed.columns) - PARSED_DATA_COLUMN_SET
     return renamed.drop(columns=surplus_columns)