diff --git a/tools/rest/multi_binder.go b/tools/rest/multi_binder.go
index 58c96560..86b18de9 100644
--- a/tools/rest/multi_binder.go
+++ b/tools/rest/multi_binder.go
@@ -92,7 +92,7 @@ func bindFormData(c echo.Context, i interface{}) error {
 			} else {
 				normalized := make([]any, total)
 				for i, vItem := range v {
-					normalized[i] = vItem
+					normalized[i] = normalizeMultipartValue(vItem)
 				}
 				rv.SetMapIndex(reflect.ValueOf(k), reflect.ValueOf(normalized))
 			}
diff --git a/tools/rest/multi_binder_test.go b/tools/rest/multi_binder_test.go
index d4592287..144733c6 100644
--- a/tools/rest/multi_binder_test.go
+++ b/tools/rest/multi_binder_test.go
@@ -50,7 +50,7 @@ func TestBindBody(t *testing.T) {
 				}.Encode(),
 			),
 			echo.MIMEApplicationForm,
-			`{"bool":true,"bools":["true","false"],"number":-123,"numbers":["123","456"],"stings":["str1","str2"],"string":"str"}`,
+			`{"bool":true,"bools":[true,false],"number":-123,"numbers":[123,456],"stings":["str1","str2"],"string":"str"}`,
 			false,
 		},
 	}