diff --git a/debug.go b/debug.go
index 8957603..2bc3d9c 100644
--- a/debug.go
+++ b/debug.go
@@ -41,11 +41,13 @@ func _sqlDebug(sqlstr string, variables []interface{}) string {
 
 func SQLPrintf(sqlstr string, variables []interface{}) string {
 	for _, v := range variables {
-		switch v.(type) {
+		switch vv := v.(type) {
 		case bool, int, int8, int16, int32, int64, uint, uint8, uint16, uint32, uint64, float32, float64:
 			sqlstr = strings.Replace(sqlstr, "?", fmt.Sprintf("%v", v), 1)
-		case string, time.Time:
+		case string:
 			sqlstr = strings.Replace(sqlstr, "?", fmt.Sprintf("'%s'", v), 1)
+		case time.Time:
+			sqlstr = strings.Replace(sqlstr, "?", fmt.Sprintf("'%s'", vv.UTC().Format(time.DateTime)), 1)
 		default:
 			sqlstr = strings.Replace(sqlstr, "?", fmt.Sprintf("'%v'", v), 1)
 		}