1 files changed, 2 insertions, 0 deletions
diff --git a/tests/test-1.c b/tests/test-1.c
index 640a37f..e81dc5a 100644
--- a/tests/test-1.c
+++ b/tests/test-1.c
@@ -1,3 +1,5 @@
+/* Test mutexes.  */
+
 #define _GNU_SOURCE
 
 #include <pthread.h>