diff --git a/plugin/auth_pam/testing/pam_mariadb_mtr.c b/plugin/auth_pam/testing/pam_mariadb_mtr.c
index d4c79f31330..dc2bc150dc9 100644
--- a/plugin/auth_pam/testing/pam_mariadb_mtr.c
+++ b/plugin/auth_pam/testing/pam_mariadb_mtr.c
@@ -10,8 +10,8 @@
 
 #include <stdlib.h>
 #include <string.h>
-#include <security/pam_modules.h>
 #include <security/pam_appl.h>
+#include <security/pam_modules.h>
 
 #define N 3