1 files changed, 1 insertions, 0 deletions
diff --git a/stm/mma.c b/stm/mma.c
index f5409ae120..a32b0ddebe 100644
--- a/stm/mma.c
+++ b/stm/mma.c
@@ -6,6 +6,7 @@
 
 #include "misc.h"
 #include "mpconfig.h"
+#include "qstr.h"
 #include "systick.h"
 #include "obj.h"
 #include "runtime.h"