diff --git a/components/mbedtls/include/mbedtls/ssl.h b/components/mbedtls/include/mbedtls/ssl.h
index 82c07607f..7e1a17c81 100644
--- a/components/mbedtls/include/mbedtls/ssl.h
+++ b/components/mbedtls/include/mbedtls/ssl.h
@@ -29,6 +29,7 @@
 #include MBEDTLS_CONFIG_FILE
 #endif
 
+#include "platform.h"
 #include "bignum.h"
 #include "ecp.h"