diff --git a/regress/unittests/bitmap/tests.c b/regress/unittests/bitmap/tests.c
index 8c630ac13..23025f90a 100644
--- a/regress/unittests/bitmap/tests.c
+++ b/regress/unittests/bitmap/tests.c
@@ -5,6 +5,8 @@
  * Placed in the public domain
  */
 
+#include "includes.h"
+
 #include <sys/types.h>
 #include <sys/param.h>
 #include <stdio.h>
diff --git a/regress/unittests/hostkeys/test_iterate.c b/regress/unittests/hostkeys/test_iterate.c
index 2b2c6508f..526e1c06e 100644
--- a/regress/unittests/hostkeys/test_iterate.c
+++ b/regress/unittests/hostkeys/test_iterate.c
@@ -5,6 +5,8 @@
  * Placed in the public domain
  */
 
+#include "includes.h"
+
 #include <sys/types.h>
 #include <sys/param.h>
 #include <stdio.h>
diff --git a/regress/unittests/kex/test_kex.c b/regress/unittests/kex/test_kex.c
index 3151fa91f..d5edf7ed4 100644
--- a/regress/unittests/kex/test_kex.c
+++ b/regress/unittests/kex/test_kex.c
@@ -5,6 +5,8 @@
  * Placed in the public domain
  */
 
+#include "includes.h"
+
 #include <sys/types.h>
 #include <sys/param.h>
 #include <stdio.h>