diff --git a/code/firmware/src/define.h b/code/firmware/src/define.h
index 2e2c118..07628cb 100644
--- a/code/firmware/src/define.h
+++ b/code/firmware/src/define.h
@@ -9,7 +9,7 @@
 #define LED6 PA1
 #define LED7 PA0
 
-#define SW1 PB2
+#define SW1 PB0
 #define SW2 PB1
 
 #define DRIVE1   PB4