diff --git a/tests/31-set-of-OK.asn1.-P b/tests/31-set-of-OK.asn1.-P
index 38a76bd..3a8cb1b 100644
--- a/tests/31-set-of-OK.asn1.-P
+++ b/tests/31-set-of-OK.asn1.-P
@@ -23,7 +23,7 @@
 
 /*** <<< POST-INCLUDE [Forest] >>> ***/
 
-#include <Tree.h>
+#include "Tree.h"
 
 /*** <<< STAT-DEFS [Forest] >>> ***/
 
@@ -237,7 +237,7 @@
 
 /*** <<< POST-INCLUDE [Stuff] >>> ***/
 
-#include <Forest.h>
+#include "Forest.h"
 
 /*** <<< STAT-DEFS [Stuff] >>> ***/