--- sgpio/sgpio.c
+++ sgpio/sgpio.c
@@ -126,7 +126,7 @@
 	int id;
 	int host_port;
 	int init;
-	char name[7];
+	char name[5 /* prefix */ + 10 /* port number */ + 1 /* terminator */];
 };
 
 /* structure for the disks associated with the led structure */