diff --git a/scope.go b/scope.go
index 65ca8519..dd5fa5b0 100644
--- a/scope.go
+++ b/scope.go
@@ -573,29 +573,13 @@ func (scope *Scope) buildCondition(clause map[string]interface{}, include bool)
 	case map[string]interface{}:
 		var sqls []string
 		for key, value := range value {
-			if value != nil {
-				sqls = append(sqls, fmt.Sprintf("(%v.%v %s %v)", quotedTableName, scope.Quote(key), equalSQL, scope.AddToVars(value)))
-			} else {
-				if !include {
-					sqls = append(sqls, fmt.Sprintf("(%v.%v IS NOT NULL)", quotedTableName, scope.Quote(key)))
-				} else {
-					sqls = append(sqls, fmt.Sprintf("(%v.%v IS NULL)", quotedTableName, scope.Quote(key)))
-				}
-			}
+			sqls = append(sqls, scope.formatValue(quotedTableName, key, equalSQL, value, include))
 		}
 		return strings.Join(sqls, " AND ")
 	case []sql.NamedArg:
 		var sqls []string
 		for _, val := range value {
-			if val.Value != nil {
-				sqls = append(sqls, fmt.Sprintf("(%v.%v %s %v)", quotedTableName, scope.Quote(val.Name), equalSQL, scope.AddToVars(val)))
-			} else {
-				if !include {
-					sqls = append(sqls, fmt.Sprintf("(%v.%v IS NOT NULL)", quotedTableName, scope.Quote(val.Name)))
-				} else {
-					sqls = append(sqls, fmt.Sprintf("(%v.%v IS NULL)", quotedTableName, scope.Quote(val.Name)))
-				}
-			}
+			sqls = append(sqls, scope.formatValue(quotedTableName, val.Name, equalSQL, val.Value, include))
 		}
 		return strings.Join(sqls, " AND ")
 	case interface{}:
@@ -683,6 +667,16 @@ func (scope *Scope) buildCondition(clause map[string]interface{}, include bool)
 	return
 }
 
+func (scope *Scope) formatValue(qtm, key, equalSQL string, value interface{}, include bool) string {
+	if value != nil {
+		return fmt.Sprintf("(%v.%v %s %v)", qtm, scope.Quote(key), equalSQL, scope.AddToVars(value))
+	}
+	if include {
+		return fmt.Sprintf("(%v.%v IS NULL)", qtm, scope.Quote(key))
+	}
+	return fmt.Sprintf("(%v.%v IS NOT NULL)", qtm, scope.Quote(key))
+}
+
 func (scope *Scope) buildSelectQuery(clause map[string]interface{}) (str string) {
 	switch value := clause["query"].(type) {
 	case string: