diff --git a/chipset/atwilc3000/Makefile.inc b/chipset/atwilc3000/Makefile.inc
index 0f991600a..f5fc4bc97 100644
--- a/chipset/atwilc3000/Makefile.inc
+++ b/chipset/atwilc3000/Makefile.inc
@@ -7,13 +7,13 @@ CONVERSION_SCRIPT=$(BTSTACK_ROOT)/chipset/atwilc3000/convert_firmware_bin.py
 wilc3000_bt_firmware.c: wilc3000_bt_firmware.bin
 	@$(CONVERSION_SCRIPT) wilc3000_bt_firmware.bin
 
-wilc3000_bt_firmware_no_rtc.c:
+wilc3000_bt_firmware_no_rtc.c: wilc3000_bt_firmware_no_rtc.bin
 	@$(CONVERSION_SCRIPT) wilc3000_bt_firmware.bin
 
-wilc3000_bt_firmware.bin: wilc3000_bt_firmware_no_rtc.bin
+wilc3000_bt_firmware.bin: 
 	@echo "Downloading $@"
-	@curl -O https://raw.githubusercontent.com/atwilc3000/firmware/master/wilc3000_bt_firmware.bin
+	@curl -O https://raw.githubusercontent.com/atwilc3000/firmware/098971235035a9a143d395279e80d33c6640e9c3/wilc3000_bt_firmware.bin
 
 wilc3000_bt_firmware_no_rtc.bin:
 	@echo "Downloading $@"
-	curl -O https://raw.githubusercontent.com/atwilc3000/firmware/master/wilc3000_bt_firmware_no_rtc.bin
+	curl -O https://raw.githubusercontent.com/atwilc3000/firmware/098971235035a9a143d395279e80d33c6640e9c3/wilc3000_bt_firmware_no_rtc.bin