diff --git a/client/src/pages/Avoirs.tsx b/client/src/pages/Avoirs.tsx
index ff15463..8f36832 100644
--- a/client/src/pages/Avoirs.tsx
+++ b/client/src/pages/Avoirs.tsx
@@ -1361,9 +1361,21 @@ export default function Avoirs() {
                         type="number" 
                         step="0.01" 
                         placeholder="Montant en euros (optionnel)" 
-                        {...field}
                         value={field.value ?? ""}
-                        onChange={(e) => field.onChange(e.target.value ? parseFloat(e.target.value) : undefined)}
+                        onChange={(e) => {
+                          const value = e.target.value;
+                          if (value === "") {
+                            field.onChange(undefined);
+                          } else {
+                            const num = parseFloat(value);
+                            if (!isNaN(num)) {
+                              field.onChange(num);
+                            }
+                          }
+                        }}
+                        onBlur={field.onBlur}
+                        name={field.name}
+                        ref={field.ref}
                       />
                     </FormControl>
                     <FormMessage />