diff --git a/components/Forms/BasicDetailsForm.js b/components/Forms/BasicDetailsForm.js
index f8654d5..06fc4cc 100644
--- a/components/Forms/BasicDetailsForm.js
+++ b/components/Forms/BasicDetailsForm.js
@@ -507,8 +507,9 @@ export function BasicDeatilsForm({ editMode }) {
 
     const formData = new FormData(e.target)
 
-    const data = Object.fromEntries(formData)
+    let data = Object.fromEntries(formData)
 
+    data['facility_catchment_population'] = data?.facility_catchment_population === '' ? null : data?.facility_catchment_population
 
     setSubmitting(true)