diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c
index 85c56800f17a..dfb010bd29f2 100644
--- a/tools/perf/util/util.c
+++ b/tools/perf/util/util.c
@@ -207,7 +207,7 @@ int copyfile_offset(int ifd, loff_t off_in, int ofd, loff_t off_out, u64 size)
 
 		size -= ret;
 		off_in += ret;
-		off_out -= ret;
+		off_out += ret;
 	}
 	munmap(ptr, off_in + size);