diff --git a/tests/io_mock.c b/tests/io_mock.c
index c04e9c5a9..4828e53ca 100644
--- a/tests/io_mock.c
+++ b/tests/io_mock.c
@@ -14,7 +14,6 @@
  * GNU General Public License for more details.
  */
 
-#include <include/test.h>
 #include "io_mock.h"
 
 static const struct io_mock *current_io = NULL;
diff --git a/tests/io_mock.h b/tests/io_mock.h
index 3af5de47c..935e84b26 100644
--- a/tests/io_mock.h
+++ b/tests/io_mock.h
@@ -31,6 +31,8 @@
 #ifndef _IO_MOCK_H_
 #define _IO_MOCK_H_
 
+#include <include/test.h>
+
 /* Required for `FILE *` */
 #include <stdio.h>