diff --git a/lib/libcam/camlib.c b/lib/libcam/camlib.c
index 10659d671ebe..394f63596cc1 100644
--- a/lib/libcam/camlib.c
+++ b/lib/libcam/camlib.c
@@ -22,7 +22,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$Id: camlib.c,v 1.2 1998/10/12 21:54:00 ken Exp $
+ *	$Id: camlib.c,v 1.3 1998/11/15 23:12:42 ken Exp $
  */
 
 #include <sys/types.h>
@@ -585,9 +585,10 @@ cam_real_open_device(const char *path, int flags, struct cam_device *device,
 	device->given_unit_number = given_unit_number;
 
 	if ((fd = open(path, flags)) < 0) {
-		sprintf(cam_errbuf, "%s: couldn't open passthrough device %s\n"
-			"%s: %s", func_name, path, func_name,
-			strerror(errno));
+		snprintf(cam_errbuf, CAM_ERRBUF_SIZE,
+			 "%s: couldn't open passthrough device %s\n"
+			 "%s: %s", func_name, path, func_name,
+			 strerror(errno));
 		goto crod_bailout;
 	}