1 files changed, 3 insertions, 1 deletions
diff --git a/lib/yesno.h b/lib/yesno.h
index dff4e7ee1..0c2570dd2 100644
--- a/lib/yesno.h
+++ b/lib/yesno.h
@@ -19,6 +19,8 @@
 #ifndef YESNO_H_
 # define YESNO_H_
 
-int yesno (void);
+# include <stdbool.h>
+
+bool yesno (void);
 
 #endif