1 files changed, 2 insertions, 0 deletions
diff --git a/CheckItem.h b/CheckItem.h
index b4300db4..a357111f 100644
--- a/CheckItem.h
+++ b/CheckItem.h
@@ -7,6 +7,8 @@ Released under the GNU GPLv2, see the COPYING file
 in the source distribution for its full text.
 */
 
+#include <stdbool.h>
+
 #include "Object.h"
 
 typedef struct CheckItem_ {