--- ./src/dvdbackup.c.org	2007-10-20 02:03:52.000000000 +0900
+++ ./src/dvdbackup.c	2007-10-20 02:30:09.000000000 +0900
@@ -30,6 +30,7 @@
 #include <unistd.h>
 #include <string.h>
 #include <limits.h>
+#include <stdint.h>
 #include <dvdread/dvd_reader.h>
 #include <dvdread/ifo_read.h>
 #include <dvdread/ifo_print.h>
@@ -1985,6 +1986,13 @@
 
 	vts_title = titles_info->titles[titles - 1].vts_title;
 
+	if (start_chapter > titles_info->titles[titles - 1].chapters &&
+	    end_chapter > titles_info->titles[titles - 1].chapters) {
+		fprintf(stderr, "Overflowed the start_chapter; only %d chapters in %d title\n", start_chapter,titles);
+		fprintf(stderr, "Overflowed the end_chapter; only %d chapters in %d title\n", end_chapter,titles);
+		return(1);
+	}
+
 	if (end_chapter > titles_info->titles[titles - 1].chapters) {
 		end_chapter = titles_info->titles[titles - 1].chapters;
 		fprintf(stderr, "Truncated the end_chapter; only %d chapters in %d title\n", end_chapter,titles);
@@ -1992,7 +2000,7 @@
 
 	if (start_chapter > titles_info->titles[titles - 1].chapters) {
 		start_chapter = titles_info->titles[titles - 1].chapters;
-		fprintf(stderr, "Truncated the end_chapter; only %d chapters in %d title\n", end_chapter,titles);
+		fprintf(stderr, "Truncated the start_chapter; only %d chapters in %d title\n", start_chapter,titles);
 	}