diff --git a/crypto/bytestring/ber.c b/crypto/bytestring/ber.c
index 2a968e1..04fcac6 100644
--- a/crypto/bytestring/ber.c
+++ b/crypto/bytestring/ber.c
@@ -34,6 +34,7 @@
   switch (tag & 0x1f) {
     case CBS_ASN1_BITSTRING:
     case CBS_ASN1_OCTETSTRING:
+    case CBS_ASN1_UTF8STRING:
     case CBS_ASN1_NUMERICSTRING:
     case CBS_ASN1_PRINTABLESTRING:
     case CBS_ASN1_T16STRING:
diff --git a/include/openssl/bytestring.h b/include/openssl/bytestring.h
index cf424d0..68ede2d 100644
--- a/include/openssl/bytestring.h
+++ b/include/openssl/bytestring.h
@@ -128,6 +128,7 @@
 #define CBS_ASN1_NULL 0x5
 #define CBS_ASN1_OBJECT 0x6
 #define CBS_ASN1_ENUMERATED 0xa
+#define CBS_ASN1_UTF8STRING 0xc
 #define CBS_ASN1_SEQUENCE (0x10 | CBS_ASN1_CONSTRUCTED)
 #define CBS_ASN1_SET (0x11 | CBS_ASN1_CONSTRUCTED)
 #define CBS_ASN1_NUMERICSTRING 0x12