diff --git a/client/src/components/map/ObjectParameters/ObjectParameters.tsx b/client/src/components/map/ObjectParameters/ObjectParameters.tsx
index 1e0ecc7..7323f06 100644
--- a/client/src/components/map/ObjectParameters/ObjectParameters.tsx
+++ b/client/src/components/map/ObjectParameters/ObjectParameters.tsx
@@ -96,9 +96,7 @@ const ObjectParameters = ({
                         <TableBody>
                             {Array.isArray(valuesData) &&
                                 valuesData.filter((param: IObjectParam) => param.format !== 'calculate').map((param: IObjectParam) => (
-                                    <>
-                                        <ObjectParameter map_id={map_id} key={param.id_param} param={param} />
-                                    </>
+                                    <ObjectParameter map_id={map_id} key={param.id_param} param={param} />
                                 ))
                             }
                         </TableBody>
@@ -118,9 +116,7 @@ const ObjectParameters = ({
                         <TableBody>
                             {Array.isArray(valuesData) &&
                                 valuesData.filter((param: IObjectParam) => param.format === 'calculate').map((param: IObjectParam) => (
-                                    <>
-                                        <ObjectParameter map_id={map_id} key={param.id_param} param={param} />
-                                    </>
+                                    <ObjectParameter map_id={map_id} key={param.id_param} param={param} />
                                 ))
                             }
                         </TableBody>
diff --git a/client/src/components/map/TableValue.tsx b/client/src/components/map/TableValue.tsx
index 8bb0aac..f1a1dc0 100644
--- a/client/src/components/map/TableValue.tsx
+++ b/client/src/components/map/TableValue.tsx
@@ -26,7 +26,7 @@ const TableValue = ({
     const { selectedDistrict } = useObjectsStore().id[map_id]
 
     //Get available values
-    const [value] = useState(Array.isArray(values) && values.length > 0 ? values[0].value : null)
+    const [value] = useState(Array.isArray(values) && values.length > 0 ? values[0].value : '')
 
     const { data: tcbAll, isValidating } = useSWR(
         type === 'select' && selectedDistrict ? `/general/params/tcb?vtable=${vtable}&id_city=${selectedDistrict}` : null,