diff --git a/unit_tests/chibios-mock/mock-threads.h b/unit_tests/chibios-mock/mock-threads.h
index 25a57692f3..e83ed68a47 100644
--- a/unit_tests/chibios-mock/mock-threads.h
+++ b/unit_tests/chibios-mock/mock-threads.h
@@ -8,7 +8,7 @@ typedef uint32_t systime_t;
 
 class thread_t {
 public:
-	char *name;
+	const char *name;
 	  tfunc_t           funcp;
 	  void              *arg;