diff --git a/firmware/hw_layer/mc33816.cpp b/firmware/hw_layer/mc33816.cpp
index acc0b2b46f..b572f1cd10 100644
--- a/firmware/hw_layer/mc33816.cpp
+++ b/firmware/hw_layer/mc33816.cpp
@@ -142,6 +142,10 @@ protected:
 		efiPrintf("PT2001 error: %s", why);
 	}
 
+	void sleepMs(size_t ms) override {
+		chThdSleepMilliseconds(ms);
+	}
+
 private:
 	SPIDriver* driver;
 
diff --git a/firmware/libfirmware b/firmware/libfirmware
index 4e750bcacd..17ba85c6e2 160000
--- a/firmware/libfirmware
+++ b/firmware/libfirmware
@@ -1 +1 @@
-Subproject commit 4e750bcacdef37eae3c12119850013fe4c83218a
+Subproject commit 17ba85c6e229b715a01963220ccc31b40c8a3e1d