diff --git a/config/examples/stm32c0-lms-8-10-1.config b/config/examples/stm32c0-lms-8-10-1.config
index 0438af3c6..6730860f9 100644
--- a/config/examples/stm32c0-lms-8-10-1.config
+++ b/config/examples/stm32c0-lms-8-10-1.config
@@ -1,6 +1,6 @@
 ARCH?=ARM
 TARGET?=stm32c0
-SIGN?=LMS
+SIGN?=ext_LMS
 LMS_LEVELS=1
 LMS_HEIGHT=10
 LMS_WINTERNITZ=8