diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6fc0c0c..2ea59fa 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -229,7 +229,8 @@ function(give_options target)
                 -Wno-declaration-after-statement
                 -Wno-unsafe-buffer-usage
                 -Wno-unused-command-line-argument
-                -Wno-covered-switch-default)
+                -Wno-covered-switch-default
+                -Wno-disabled-macro-expansion)
 
         set(WARNING_FLAGS
                 -Wall
diff --git a/src/system/linux/twn_timer.c b/src/system/linux/twn_timer.c
index 3fc51e9..ad7fb77 100644
--- a/src/system/linux/twn_timer.c
+++ b/src/system/linux/twn_timer.c
@@ -11,7 +11,6 @@
 
 
 static timer_t            timerid;
-static sigset_t           mask;
 static struct sigaction   sa;
 static struct sigevent    sev;