diff --git a/library/ssl_tls12_server.c b/library/ssl_tls12_server.c
index 5a9f6ca..f242faa 100644
--- a/library/ssl_tls12_server.c
+++ b/library/ssl_tls12_server.c
@@ -13,7 +13,7 @@
 
 #include "mbedtls/ssl.h"
 #include "ssl_misc.h"
-#include "mbedtls/debug.h"
+#include "debug_internal.h"
 #include "mbedtls/error.h"
 #include "mbedtls/platform_util.h"
 #include "constant_time_internal.h"