diff --git a/lib/libcam/cam.3 b/lib/libcam/cam.3
--- a/lib/libcam/cam.3
+++ b/lib/libcam/cam.3
@@ -27,7 +27,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd July 6, 2020
+.Dd November 23, 2020
 .Dt CAM 3
 .Os
 .Sh NAME
@@ -285,9 +285,9 @@
 structure was allocated by the caller, rather than the CAM library.
 .Pp
 .Fn cam_getccb
-allocates a CCB
+allocates a prezeroed CCB
 using
-.Xr malloc 3
+.Xr calloc 3
 and sets fields in the CCB header using values from the
 .Va cam_device
 structure.
diff --git a/lib/libcam/camlib.c b/lib/libcam/camlib.c
--- a/lib/libcam/camlib.c
+++ b/lib/libcam/camlib.c
@@ -79,9 +79,8 @@
 {
 	union ccb *ccb;
 
-	ccb = (union ccb *)malloc(sizeof(union ccb));
+	ccb = calloc(1, sizeof(*ccb));
 	if (ccb != NULL) {
-		bzero(&ccb->ccb_h, sizeof(struct ccb_hdr));
 		ccb->ccb_h.path_id = dev->path_id;
 		ccb->ccb_h.target_id = dev->target_id;
 		ccb->ccb_h.target_lun = dev->target_lun;