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-rw-r--r--io/channel-websock.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/io/channel-websock.c b/io/channel-websock.c
index 9619906ac3..fb4932ade7 100644
--- a/io/channel-websock.c
+++ b/io/channel-websock.c
@@ -32,7 +32,7 @@
#define QIO_CHANNEL_WEBSOCK_CLIENT_KEY_LEN 24
#define QIO_CHANNEL_WEBSOCK_GUID "258EAFA5-E914-47DA-95CA-C5AB0DC85B11"
-#define QIO_CHANNEL_WEBSOCK_GUID_LEN strlen(QIO_CHANNEL_WEBSOCK_GUID)
+#define QIO_CHANNEL_WEBSOCK_GUID_LEN (sizeof(QIO_CHANNEL_WEBSOCK_GUID) - 1)
#define QIO_CHANNEL_WEBSOCK_HEADER_PROTOCOL "sec-websocket-protocol"
#define QIO_CHANNEL_WEBSOCK_HEADER_VERSION "sec-websocket-version"