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-rw-r--r--src/core/transport/metadata.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/core/transport/metadata.c b/src/core/transport/metadata.c
index 3fd21a2f5d..61638764a6 100644
--- a/src/core/transport/metadata.c
+++ b/src/core/transport/metadata.c
@@ -703,7 +703,7 @@ int grpc_mdstr_is_legal_header(grpc_mdstr *s) {
int grpc_mdstr_is_legal_nonbin_header(grpc_mdstr *s) {
static const gpr_uint8 legal_header_bits[256 / 8] = {
- 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+ 0x00, 0x00, 0x00, 0x00, 0xff, 0xef, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0x7f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
return conforms_to(s, legal_header_bits);