diff --git a/source/arm11/atp.c b/source/arm11/atp.c
index 9d0e3e4..c1c1b1b 100644
--- a/source/arm11/atp.c
+++ b/source/arm11/atp.c
@@ -190,8 +190,8 @@ static void set_paging( int top, int len )
 
     unsigned total = (len+CONTAINER_MAX_LINES-1) / CONTAINER_MAX_LINES;
     unsigned current = top / CONTAINER_MAX_LINES;
-    char buf[PAGING_BUFSIZE];
-    ee_snprintf( buf, PAGING_BUFSIZE-1, "页码：%d/%d", top, len );
+    char buf[PAGING_BUFSIZE+1];
+    ee_snprintf( buf, PAGING_BUFSIZE, "页码：%d/%d", top, len );
     buf[PAGING_BUFSIZE] = '\0';
     atp_tips( buf, NULL );
 }