diff --git a/variants/STM32F4xx/F401C(B-C)_F401C(D-E)_F401CCFx/variant_BLACKPILL_F401CC.h b/variants/STM32F4xx/F401C(B-C)_F401C(D-E)_F401CCFx/variant_BLACKPILL_F401CC.h
index 84746dd8e5..375e950e98 100644
--- a/variants/STM32F4xx/F401C(B-C)_F401C(D-E)_F401CCFx/variant_BLACKPILL_F401CC.h
+++ b/variants/STM32F4xx/F401C(B-C)_F401C(D-E)_F401CCFx/variant_BLACKPILL_F401CC.h
@@ -88,7 +88,8 @@
 
 // On-board user button
 #ifndef USER_BTN
-  #define USER_BTN              ND
+// User button is not available on all revision of this board
+  #define USER_BTN              PA0
 #endif
 
 // SPI definitions