diff --git a/build_vxworks/util/db_hotbackup.c b/build_vxworks/util/db_hotbackup.c
index bc8b6e384..beb51f777 100644
--- a/build_vxworks/util/db_hotbackup.c
+++ b/build_vxworks/util/db_hotbackup.c
@@ -452,7 +452,7 @@ db_hotbackup_env_init(dbenvp, home, log_dirp, data_dirp, passwd, which, verbose)
 			 * trim the home directory from the data directory
 			 * passed in.
 			 */
-			(void) sprintf(buf, "%s/%s", home, home);
+			(void) snprintf(buf, sizeof(buf), "%s/%s", home, home);
 			homehome = 0;
 			(void)__os_exists(dbenv->env, buf, &homehome);
 				
diff --git a/util/db_hotbackup.c b/util/db_hotbackup.c
index 08dddc884..8ab6a4681 100644
--- a/util/db_hotbackup.c
+++ b/util/db_hotbackup.c
@@ -437,7 +437,7 @@ env_init(dbenvp, home, log_dirp, data_dirp, passwd, which, verbose)
 			 * trim the home directory from the data directory
 			 * passed in.
 			 */
-			(void) sprintf(buf, "%s/%s", home, home);
+			(void) snprintf(buf, sizeof(buf), "%s/%s", home, home);
 			homehome = 0;
 			(void)__os_exists(dbenv->env, buf, &homehome);