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-rw-r--r--block/blkdebug.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/block/blkdebug.c b/block/blkdebug.c
index 0457bf5b66..0759452925 100644
--- a/block/blkdebug.c
+++ b/block/blkdebug.c
@@ -305,7 +305,7 @@ static void blkdebug_parse_filename(const char *filename, QDict *options,
if (c != filename) {
QString *config_path;
- config_path = qstring_from_substr(filename, 0, c - filename - 1);
+ config_path = qstring_from_substr(filename, 0, c - filename);
qdict_put(options, "config", config_path);
}