diff --git a/fedelemflowlist/globals.py b/fedelemflowlist/globals.py
index 3bc04cc..8045475 100644
--- a/fedelemflowlist/globals.py
+++ b/fedelemflowlist/globals.py
@@ -156,7 +156,7 @@ def add_conversion_to_mapping(flow_mapping):
 
     # update conversion factor where current conversion is 1 and the updated conversion exists
     converted1 = mapping_w_conversion['InverseConversionFactor'].notnull()
-    converted2 = mapping_w_conversion['ConversionFactor']==1
+    converted2 = mapping_w_conversion['ConversionFactor']==1.0
     mapping_w_conversion['Convert']=converted1 & converted2
     mapping_w_conversion.loc[(mapping_w_conversion['Convert']==True),
                              'ConversionFactor']=mapping_w_conversion['InverseConversionFactor']
diff --git a/scripts/build_lcia_mapping.py b/scripts/build_lcia_mapping.py
index b461586..ce75c89 100644
--- a/scripts/build_lcia_mapping.py
+++ b/scripts/build_lcia_mapping.py
@@ -74,9 +74,9 @@ def get_manual_mappings(source, ftype):
     lciafmt_w_context_flowable_mappings['SourceListName'] = lcia_name
     if 'ConversionFactor' in flowable_mappings:
         lciafmt_w_context_flowable_mappings['ConversionFactor'] = \
-            lciafmt_w_context_flowable_mappings['ConversionFactor'].fillna(1)
+            lciafmt_w_context_flowable_mappings['ConversionFactor'].fillna(1.0)
     else:
-        lciafmt_w_context_flowable_mappings['ConversionFactor'] = 1
+        lciafmt_w_context_flowable_mappings['ConversionFactor'] = 1.0
     lciafmt_w_context_flowable_mappings['SourceFlowUUID'] = None
     
     # Add conversion factors
@@ -87,8 +87,8 @@ def get_manual_mappings(source, ftype):
     lcia_mappings = add_uuid_to_mapping(lciafmt_w_context_flowable_mappings)
    
     # Sort to maintain mapping file consistency
-    lcia_mappings.sort_values(by=['SourceFlowName','SourceFlowContext'],
-                              inplace=True, ignore_index=True)
+    lcia_mappings = lcia_mappings.sort_values(
+        by=['SourceFlowName','SourceFlowContext'], ignore_index=True)
 
     # Write them to a csv
     lcia_mappings.to_csv(flowmappingpath / f'{lcia_name}.csv', index=False)