diff --git a/contrib/opie/opie.4 b/contrib/opie/opie.4
index 90214b0aff5..cb0c83b325e 100644
--- a/contrib/opie/opie.4
+++ b/contrib/opie/opie.4
@@ -228,6 +228,12 @@ you would use a call to opiechallenge. Later, to verify the response received,
 you would use a call to opieverify. For example:
 .sp 0
 
+.sp 0
+	#include <sys/types.h>
+.sp 0
+		.
+.sp 0
+		.
 .sp 0
 	#include <stdio.h>
 .sp 0
@@ -235,7 +241,7 @@ you would use a call to opieverify. For example:
 .sp 0
 		.
 .sp 0
-	#include "opie.h"
+	#include <opie.h>
 .sp 0
 		.
 .sp 0