diff --git a/migration_test.go b/migration_test.go
index 6b4470a6..d58e1fb5 100644
--- a/migration_test.go
+++ b/migration_test.go
@@ -33,6 +33,7 @@ type User struct {
 	CompanyID         *int
 	Company           Company
 	Role              Role
+	Password          EncryptedData
 	PasswordHash      []byte
 	IgnoreMe          int64                 `sql:"-"`
 	IgnoreStringSlice []string              `sql:"-"`
@@ -116,6 +117,31 @@ type Company struct {
 	Owner *User `sql:"-"`
 }
 
+type EncryptedData []byte
+
+func (data *EncryptedData) Scan(value interface{}) error {
+	if b, ok := value.([]byte); ok {
+		if len(b) < 3 || b[0] != '*' || b[1] != '*' || b[2] != '*' {
+			return errors.New("Too short")
+		}
+
+		*data = b[3:]
+		return nil
+	}
+
+	return errors.New("Bytes expected")
+}
+
+func (data EncryptedData) Value() (driver.Value, error) {
+	if len(data) > 0 && data[0] == 'x' {
+		//needed to test failures
+		return nil, errors.New("Should not start with 'x'")
+	}
+
+	//prepend asterisks
+	return append([]byte("***"), data...), nil
+}
+
 type Role struct {
 	Name string `gorm:"size:256"`
 }
diff --git a/scope.go b/scope.go
index ae98d251..0dcea855 100644
--- a/scope.go
+++ b/scope.go
@@ -557,9 +557,13 @@ func (scope *Scope) buildWhereCondition(clause map[string]interface{}) (str stri
 
 	args := clause["args"].([]interface{})
 	for _, arg := range args {
+		var err error
 		switch reflect.ValueOf(arg).Kind() {
 		case reflect.Slice: // For where("id in (?)", []int64{1,2})
-			if bytes, ok := arg.([]byte); ok {
+			if scanner, ok := interface{}(arg).(driver.Valuer); ok {
+				arg, err = scanner.Value()
+				str = strings.Replace(str, "?", scope.AddToVars(arg), 1)
+			} else if bytes, ok := arg.([]byte); ok {
 				str = strings.Replace(str, "?", scope.AddToVars(bytes), 1)
 			} else if values := reflect.ValueOf(arg); values.Len() > 0 {
 				var tempMarks []string
@@ -572,11 +576,14 @@ func (scope *Scope) buildWhereCondition(clause map[string]interface{}) (str stri
 			}
 		default:
 			if valuer, ok := interface{}(arg).(driver.Valuer); ok {
-				arg, _ = valuer.Value()
+				arg, err = valuer.Value()
 			}
 
 			str = strings.Replace(str, "?", scope.AddToVars(arg), 1)
 		}
+		if err != nil {
+			scope.Err(err)
+		}
 	}
 	return
 }
@@ -629,9 +636,13 @@ func (scope *Scope) buildNotCondition(clause map[string]interface{}) (str string
 
 	args := clause["args"].([]interface{})
 	for _, arg := range args {
+		var err error
 		switch reflect.ValueOf(arg).Kind() {
 		case reflect.Slice: // For where("id in (?)", []int64{1,2})
-			if bytes, ok := arg.([]byte); ok {
+			if scanner, ok := interface{}(arg).(driver.Valuer); ok {
+				arg, err = scanner.Value()
+				str = strings.Replace(str, "?", scope.AddToVars(arg), 1)
+			} else if bytes, ok := arg.([]byte); ok {
 				str = strings.Replace(str, "?", scope.AddToVars(bytes), 1)
 			} else if values := reflect.ValueOf(arg); values.Len() > 0 {
 				var tempMarks []string
@@ -644,10 +655,13 @@ func (scope *Scope) buildNotCondition(clause map[string]interface{}) (str string
 			}
 		default:
 			if scanner, ok := interface{}(arg).(driver.Valuer); ok {
-				arg, _ = scanner.Value()
+				arg, err = scanner.Value()
 			}
 			str = strings.Replace(notEqualSQL, "?", scope.AddToVars(arg), 1)
 		}
+		if err != nil {
+			scope.Err(err)
+		}
 	}
 	return
 }
diff --git a/scope_test.go b/scope_test.go
index 42458995..3018f350 100644
--- a/scope_test.go
+++ b/scope_test.go
@@ -1,8 +1,12 @@
 package gorm_test
 
 import (
-	"github.com/jinzhu/gorm"
+	"encoding/hex"
+	"math/rand"
+	"strings"
 	"testing"
+
+	"github.com/jinzhu/gorm"
 )
 
 func NameIn1And2(d *gorm.DB) *gorm.DB {
@@ -41,3 +45,36 @@ func TestScopes(t *testing.T) {
 		t.Errorf("Should found two users's name in 1, 3")
 	}
 }
+
+func randName() string {
+	data := make([]byte, 8)
+	rand.Read(data)
+
+	return "n-" + hex.EncodeToString(data)
+}
+
+func TestValuer(t *testing.T) {
+	name := randName()
+
+	origUser := User{Name: name, Age: 1, Password: EncryptedData("pass1"), PasswordHash: []byte("abc")}
+	if err := DB.Save(&origUser).Error; err != nil {
+		t.Errorf("No error should happen when saving user, but got %v", err)
+	}
+
+	var user2 User
+	if err := DB.Where("name = ? AND password = ? AND password_hash = ?", name, EncryptedData("pass1"), []byte("abc")).First(&user2).Error; err != nil {
+		t.Errorf("No error should happen when querying user with valuer, but got %v", err)
+	}
+}
+
+func TestFailedValuer(t *testing.T) {
+	name := randName()
+
+	err := DB.Exec("INSERT INTO users(name, password) VALUES(?, ?)", name, EncryptedData("xpass1")).Error
+
+	if err == nil {
+		t.Errorf("There should be an error should happen when insert data")
+	} else if !strings.HasPrefix(err.Error(), "Should not start with") {
+		t.Errorf("The error should be returned from Valuer, but get %v", err)
+	}
+}