diff --git a/.changeset/wise-snakes-boil.md b/.changeset/wise-snakes-boil.md
new file mode 100644
index 00000000..88b42a31
--- /dev/null
+++ b/.changeset/wise-snakes-boil.md
@@ -0,0 +1,5 @@
+---
+"@premieroctet/next-admin": patch
+---
+
+Fix relation one-to-many - nullable relation
diff --git a/packages/next-admin/src/components/inputs/SelectWidget.tsx b/packages/next-admin/src/components/inputs/SelectWidget.tsx
index 5c57b740..e86747a7 100644
--- a/packages/next-admin/src/components/inputs/SelectWidget.tsx
+++ b/packages/next-admin/src/components/inputs/SelectWidget.tsx
@@ -36,7 +36,7 @@ const SelectWidget = ({
 
   const { basePath } = useConfig();
 
-  const handleChange = (option: Enumeration) => {
+  const handleChange = (option: Enumeration | null) => {
     setFieldDirty(props.name);
     onChange(option);
     onClose();
@@ -95,7 +95,7 @@ const SelectWidget = ({
               className="flex items-center"
               onClick={(e) => {
                 e.preventDefault();
-                onChange({});
+                handleChange(null);
               }}
             >
               <XMarkIcon className="h-5 w-5 cursor-pointer text-gray-400" />