diff --git a/spice/stream-device.h b/spice/stream-device.h
index 57de98b..2e7c50e 100644
--- a/spice/stream-device.h
+++ b/spice/stream-device.h
@@ -98,8 +98,8 @@ typedef enum StreamMsgType {
  * If it is not sent, it means that guest/host doesn't support any extension.
  * Guest should send this as a reply from same type of message
  * from the host.
- * This message should be limited to STREAM_MSG_CAPABILITIES_MAX. This allows
- * plenty of negotiations.
+ * This message should be limited to STREAM_MSG_CAPABILITIES_MAX_BYTES. This
+ * allows plenty of negotiations.
  *
  * States allowed: Initial(host), Idle(guest)
  *   state will change to Idle.
@@ -108,7 +108,7 @@ typedef struct StreamMsgCapabilities {
     uint8_t capabilities[0];
 } StreamMsgCapabilities;
 
-#define STREAM_MSG_CAPABILITIES_MAX 1024
+#define STREAM_MSG_CAPABILITIES_MAX_BYTES 1024
 
 /* Define the format of the stream, start a new stream.
  * This message is sent by the guest to the host to