diff --git a/src/data_sources.py b/src/data_sources.py
index 81b78fb0d..a8db76c1e 100644
--- a/src/data_sources.py
+++ b/src/data_sources.py
@@ -65,7 +65,7 @@ def read_varlist(self, parent, append_vars: bool=False):
     def set_date_range(self, startdate: str, enddate: str):
         self.date_range = util.DateRange(start=startdate, end=enddate)
     
-    def set_query_base(self, var: varlist_util.VarlistEntry, path_regex: str):
+    def set_query(self, var: varlist_util.VarlistEntry, path_regex: str):
         realm_regex = var.realm + '*'
         date_range = var.T.range
         var_id = var.name
@@ -126,7 +126,8 @@ class CMIPDataSource(DataSourceBase):
     convention: str = "CMIP"
     
     def set_query(self, var: varlist_util.VarlistEntry, path_regex: str):
-        self.set_query_base(var, path_regex)
+        super().set_query(var, path_regex)
+        return
 
 @data_source.maker
 class CESMDataSource(DataSourceBase):
@@ -139,7 +140,8 @@ class CESMDataSource(DataSourceBase):
     convention: str = "CESM"
     
     def set_query(self, var: varlist_util.VarlistEntry, path_regex: str):
-        self.set_query_base(var, path_regex)
+        super().set_query(var, path_regex)
+        return
 
 @data_source.maker
 class GFDLDataSource(DataSourceBase):
@@ -152,7 +154,8 @@ class GFDLDataSource(DataSourceBase):
     convention: str = "GFDL"
 
     def set_query(self, var: varlist_util.VarlistEntry, path_regex: str):
-        self.set_query_base(var, path_regex)
+        super().set_query(var, path_regex)
         # this is hacky, but prevents the framework from grabbing from ice_1x1deg
         if self.query['realm'] == 'seaIce*':
             self.query['realm'] = 'ice'
+        return
diff --git a/src/preprocessor.py b/src/preprocessor.py
index 8495c4486..ce8281e38 100644
--- a/src/preprocessor.py
+++ b/src/preprocessor.py
@@ -97,7 +97,7 @@ def execute(self, var: varlist_util.VarlistEntry,
         pass
 
 
-class PercentTo01Function(PreprocessorFunctionBase):
+class PercentConversionFunction(PreprocessorFunctionBase):
     """A PreprocessorFunction which convers the dependent variable's units and values,
     for the specific case of percentages. ``0-1`` are not defined in the UDUNITS-2
     library. So, this function handles the case where we have to convert from 
@@ -724,7 +724,7 @@ def _functions(self):
         """
         # normal operation: run all functions
         return [
-            AssociatedVariablesFunction, PercentTo01Function,
+            AssociatedVariablesFunction, PercentConversionFunction,
             PrecipRateToFluxFunction, ConvertUnitsFunction,
             ExtractLevelFunction, RenameVariablesFunction
         ]