diff --git a/binder_test.go b/binder_test.go
index bb22786..982491c 100644
--- a/binder_test.go
+++ b/binder_test.go
@@ -79,6 +79,10 @@ type TestMapIntKey struct {
 	Map2 map[TestTypeString]TestTypeInt
 }
 
+type TestMapIntKey2 struct {
+	Map map[int]*TestProfile
+}
+
 func TestMapToAnonymous(t *testing.T) {
 	e := New()
 	m := &TestAnonymous{}
@@ -369,6 +373,25 @@ func TestStructMapIntKey(t *testing.T) {
 		},
 	}, m)
 }
+func TestStructMapIntKey2(t *testing.T) {
+	e := New()
+	m := &TestMapIntKey2{}
+	err := FormToStruct(e, m, map[string][]string{
+		`map[1][address]`: {`a`},
+		`map[2][address]`: {`b`},
+		`map[3][address]`: {`c`},
+		`map[5][address]`: {`e`},
+	}, ``)
+	assert.NoError(t, err)
+	assert.Equal(t, &TestMapIntKey2{
+		Map: map[int]*TestProfile{
+			1: {Address: `a`},
+			2: {Address: `b`},
+			3: {Address: `c`},
+			5: {Address: `e`},
+		},
+	}, m)
+}
 
 type TestBinderWithConvertor struct {
 	Options map[string]string `form_decoder:"splitKVRows:=" form_encoder:"joinKVRows"`
diff --git a/binder_tostruct.go b/binder_tostruct.go
index 9e218d4..40dae90 100644
--- a/binder_tostruct.go
+++ b/binder_tostruct.go
@@ -263,7 +263,7 @@ func (e *Echo) parseFormItem(keyNormalizer func(string) string, m interface{}, t
 				value = value.Elem()
 			}
 			itemT = itemT.Elem()
-			index := reflect.ValueOf(name)
+			index := convertMapKey(tc, name)
 			newV := value.MapIndex(index)
 			if !newV.IsValid() {
 				newV = reflect.New(itemT).Elem()
@@ -421,6 +421,22 @@ func (e *Echo) binderValueDecode(name string, typev reflect.Type, tv reflect.Val
 	return ErrNotImplemented
 }
 
+func convertMapKey(typev reflect.Type, key string) reflect.Value {
+	var index reflect.Value
+	keyT := typev.Key()
+	kind := keyT.Kind()
+	if kind != reflect.String {
+		mapKey := param.AsType(kind.String(), key)
+		index = reflect.ValueOf(mapKey)
+	} else {
+		index = reflect.ValueOf(key)
+	}
+	if index.Type().Name() != keyT.Name() && index.CanConvert(keyT) {
+		index = index.Convert(keyT)
+	}
+	return index
+}
+
 func (e *Echo) setMap(logger logger.Logger,
 	parentT reflect.Type, parentV reflect.Value,
 	name string, value reflect.Value, typev reflect.Type,
@@ -429,16 +445,7 @@ func (e *Echo) setMap(logger logger.Logger,
 		value.Set(reflect.MakeMap(value.Type()))
 	}
 	value = reflect.Indirect(value)
-	var index reflect.Value
-	if typev.Key().Kind() != reflect.String {
-		mapKey := param.AsType(typev.Key().Kind().String(), name)
-		index = reflect.ValueOf(mapKey)
-	} else {
-		index = reflect.ValueOf(name)
-	}
-	if index.Type().Name() != typev.Key().Name() && index.CanConvert(typev.Key()) {
-		index = index.Convert(typev.Key())
-	}
+	index := convertMapKey(typev, name)
 	oldVal := value.MapIndex(index)
 	if !oldVal.IsValid() {
 		oldType := value.Type().Elem()