1 files changed, 3 insertions, 1 deletions
diff --git a/lib/stdopen.h b/lib/stdopen.h
index d6c9415b4..d54e5f135 100644
--- a/lib/stdopen.h
+++ b/lib/stdopen.h
@@ -1,11 +1,13 @@
 #ifndef STDOPEN_H
 # define STDOPEN_H 1
 
+# include <stdbool.h>
+
 # ifdef __cplusplus
 extern "C" {
 # endif
 
-void stdopen (void);
+bool stdopen (void);
 
 # ifdef __cplusplus
 }