diff --git a/sys/cam/cam.h b/sys/cam/cam.h
index 4aad13a7ad5..20f660e1649 100644
--- a/sys/cam/cam.h
+++ b/sys/cam/cam.h
@@ -99,7 +99,7 @@ typedef enum {
 	CAM_REQ_ABORTED,	/* CCB request aborted by the host */
 	CAM_UA_ABORT,		/* Unable to abort CCB request */
 	CAM_REQ_CMP_ERR,	/* CCB request completed with an error */
-	CAM_BUSY,		/* CAM subsytem is busy */
+	CAM_BUSY,		/* CAM subsystem is busy */
 	CAM_REQ_INVALID,	/* CCB request was invalid */
 	CAM_PATH_INVALID,	/* Supplied Path ID is invalid */
 	CAM_DEV_NOT_THERE,	/* SCSI Device Not Installed/there */