diff --git a/expected/init.out b/expected/init.out
index a1e549bf..96ca9e74 100644
--- a/expected/init.out
+++ b/expected/init.out
@@ -22,7 +22,7 @@ results/init/backup/pg_probackup.conf
 results/init/backup/wal/
 ###### INIT COMMAND TEST-0004 ######
 ###### failure with backup catalog already existed ######
-ERROR: backup catalog already exist. and it's not empty
+ERROR: backup catalog already exist and it's not empty
 1
 
 ###### INIT COMMAND TEST-0005 ######
diff --git a/init.c b/init.c
index 9e1b3bfd..b5d49889 100644
--- a/init.c
+++ b/init.c
@@ -42,7 +42,7 @@ do_init(void)
 	{
 		results = scandir(backup_path, &dp, selects, NULL);
 		if (results != 0)
-			elog(ERROR, "backup catalog already exist. and it's not empty");
+			elog(ERROR, "backup catalog already exist and it's not empty");
 	}
 
 	/* create backup catalog root directory */