diff --git a/ext/mysqlnd/mysqlnd_charset.c b/ext/mysqlnd/mysqlnd_charset.c
index 0b7ce08236b..c289a62de3c 100644
--- a/ext/mysqlnd/mysqlnd_charset.c
+++ b/ext/mysqlnd/mysqlnd_charset.c
@@ -495,8 +495,8 @@ const MYSQLND_CHARSET mysqlnd_charsets[] =
 	{  42, "latin7", "latin7_general_cs", 1, 1, "", NULL, NULL},
 	{  43, "macce", "macce_bin", 1, 1, "", NULL, NULL},
 	{  44, "cp1250", "cp1250_croatian_ci", 1, 1, "", NULL, NULL},
-	{  45, UTF8_MB4, UTF8_MB4"_general_ci", 1, 3, "UTF-8 Unicode", mysqlnd_mbcharlen_utf8,  check_mb_utf8_valid},
-	{  46, UTF8_MB4, UTF8_MB4"_bin", 1, 3, "UTF-8 Unicode", mysqlnd_mbcharlen_utf8,  check_mb_utf8_valid},
+	{  45, UTF8_MB4, UTF8_MB4"_general_ci", 1, 4, "UTF-8 Unicode", mysqlnd_mbcharlen_utf8,  check_mb_utf8_valid},
+	{  46, UTF8_MB4, UTF8_MB4"_bin", 1, 4, "UTF-8 Unicode", mysqlnd_mbcharlen_utf8,  check_mb_utf8_valid},
 	{  47, "latin1", "latin1_bin", 1, 1, "", NULL, NULL},
 	{  48, "latin1", "latin1_general_ci", 1, 1, "", NULL, NULL},
 	{  49, "latin1", "latin1_general_cs", 1, 1, "", NULL, NULL},