diff --git a/src/core/crypto/mbedtls.cpp b/src/core/crypto/mbedtls.cpp
index ab61ee354..8695ac454 100644
--- a/src/core/crypto/mbedtls.cpp
+++ b/src/core/crypto/mbedtls.cpp
@@ -33,6 +33,7 @@
 
 #include "mbedtls.hpp"
 
+#include <mbedtls/debug.h>
 #include <mbedtls/platform.h>
 
 #include "common/instance.hpp"