diff --git a/examples/HID/SRWS1/SRWS1.cpp b/examples/HID/SRWS1/SRWS1.cpp
index 97e53a73..77396f84 100644
--- a/examples/HID/SRWS1/SRWS1.cpp
+++ b/examples/HID/SRWS1/SRWS1.cpp
@@ -29,7 +29,7 @@ void SRWS1::ParseHIDData(USBHID *hid, bool is_rpt_id, uint8_t len, uint8_t *buf)
                 }
         }
 #endif
-        memcpy(&srws1Data, buf, min(len, sizeof(srws1Data)));
+        memcpy(&srws1Data, buf, min(len, MFK_CASTUINT8T sizeof(srws1Data)));
 
         static SRWS1DataButtons oldButtonState;
         if (srws1Data.btn.val != oldButtonState.val) { // Check if anything has changed