diff --git a/app/boards/shields/mf68/mf68.overlay b/app/boards/shields/mf68/mf68.overlay
index 6d09c87e..b56eeca8 100644
--- a/app/boards/shields/mf68/mf68.overlay
+++ b/app/boards/shields/mf68/mf68.overlay
@@ -34,7 +34,7 @@
       , <&pro_micro 18 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
       , <&pro_micro 19 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
       , <&pro_micro 20 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
-      , <&pro_micro 20 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>;
+      , <&pro_micro 21 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>;
 
   };
 };