diff --git a/missing.h b/missing.h
index d2a2d6570..d6e278c49 100644
--- a/missing.h
+++ b/missing.h
@@ -21,6 +21,9 @@
 
 /* Functions "missing" from libc. */
 
+struct timeval;
+struct timespec;
+
 #ifndef HAVE_CLOSEFROM
 void closefrom		__P((int));
 #endif
diff --git a/sudo.h b/sudo.h
index e3f56cfd6..0ee906ae3 100644
--- a/sudo.h
+++ b/sudo.h
@@ -191,8 +191,6 @@ struct sudo_user {
 
 struct lbuf;
 struct passwd;
-struct timespec;
-struct timeval;
 
 /*
  * Function prototypes