diff --git a/regress/unittests/sshsig/tests.c b/regress/unittests/sshsig/tests.c
index 44dcf5ef7..a131795cd 100644
--- a/regress/unittests/sshsig/tests.c
+++ b/regress/unittests/sshsig/tests.c
@@ -5,6 +5,8 @@
  * Placed in the public domain
  */
 
+#include "includes.h"
+
 #include <sys/types.h>
 #include <sys/param.h>
 #include <sys/stat.h>