diff --git a/core/embed/firmware/mphalport.c b/core/embed/firmware/mphalport.c
index 339a907fe..9c5c9f141 100644
--- a/core/embed/firmware/mphalport.c
+++ b/core/embed/firmware/mphalport.c
@@ -19,7 +19,6 @@
 
 #include "common.h"
 #include "py/mphal.h"
-#include "string.h"
 #include "usb.h"
 
 static int vcp_iface_num = -1;