diff --git a/libasn1fix/asn1fix_constraint.c b/libasn1fix/asn1fix_constraint.c
index 8c6c73c..9a32b49 100644
--- a/libasn1fix/asn1fix_constraint.c
+++ b/libasn1fix/asn1fix_constraint.c
@@ -1,6 +1,6 @@
-#include <asn1fix_internal.h>
-#include <asn1fix_constraint.h>
-#include <asn1fix_crange.h>
+#include "asn1fix_internal.h"
+#include "asn1fix_constraint.h"
+#include "asn1fix_crange.h"
 
 static void _remove_exceptions(arg_t *arg, asn1p_constraint_t *ct);
 static int _constraint_value_resolve(arg_t *arg, asn1p_module_t *mod, asn1p_value_t **value);