diff --git a/tools/perf/util/dso-test-data.c b/tools/perf/util/dso-test-data.c
index 541cdc72c7df..c6caedeb1d6b 100644
--- a/tools/perf/util/dso-test-data.c
+++ b/tools/perf/util/dso-test-data.c
@@ -23,7 +23,7 @@ static char *test_file(int size)
 	int fd, i;
 	unsigned char *buf;
 
-	fd = mkostemp(templ, O_CREAT|O_WRONLY|O_TRUNC);
+	fd = mkstemp(templ);
 
 	buf = malloc(size);
 	if (!buf) {