diff --git a/lemonbar.c b/lemonbar.c
index d6cf9cf..3ddf92e 100644
--- a/lemonbar.c
+++ b/lemonbar.c
@@ -49,7 +49,7 @@ typedef struct area_t {
     unsigned int end:16;
     bool active:1;
     int align:3;
-    int button;
+    unsigned int button:3;
     xcb_window_t window;
     char *cmd;
 } area_t;