diff --git a/config/examples/stm32c0.config b/config/examples/stm32c0.config
index 637272058..0a09dd905 100644
--- a/config/examples/stm32c0.config
+++ b/config/examples/stm32c0.config
@@ -1,8 +1,9 @@
 ARCH?=ARM
 TARGET?=stm32c0
-#Supports ED25519/SHA384 or RSA2048/SHA256
-SIGN?=RSA2048
-HASH?=SHA256
+#Supports ED25519/SHA384
+# No longer supported: RSA2048/SHA256
+SIGN?=ED25519
+HASH?=SHA384
 DEBUG?=0
 VTOR?=1
 CORTEX_M0?=1