diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c
index a789f952b3e9b8d84c6999f5486fb25d5a3676ba..443892dabedbe319d8f1f582c3a255c03da5d748 100644
--- a/tools/perf/util/util.c
+++ b/tools/perf/util/util.c
@@ -210,7 +210,7 @@ static int copyfile_offset(int ifd, loff_t off_in, int ofd, loff_t off_out, u64
 
 		size -= ret;
 		off_in += ret;
-		off_out -= ret;
+		off_out += ret;
 	}
 	munmap(ptr, off_in + size);