diff --git a/src/client/secure.h b/src/client/secure.h
index a93ff980..0fccbb2c 100644
--- a/src/client/secure.h
+++ b/src/client/secure.h
@@ -34,6 +34,8 @@
 #ifndef SECURE_H
 #define SECURE_H
 
+#include <stddef.h>
+
 extern size_t save_input(char *);
 extern size_t seen_input(char *);
 extern void forget_input(size_t);
diff --git a/src/lib/lwp/lwpint.h b/src/lib/lwp/lwpint.h
index e7db4da3..984c2984 100644
--- a/src/lib/lwp/lwpint.h
+++ b/src/lib/lwp/lwpint.h
@@ -36,6 +36,7 @@
 #define LWPINT_H
 
 #include <signal.h>
+#include <time.h>
 #include <ucontext.h>
 
 #include "misc.h"