diff --git a/src/main.cpp b/src/main.cpp
index fba7ebe..716a133 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -288,7 +288,7 @@ void on_pin_change(uint8_t pin, uint8_t value)
   // For input pin 4-7, map it with output pin 8-11
   // For input pin 12, map it with output pin 12
   // When Input pin change, Toggle the output pin
-  Switch (pin){
+  switch (pin){
     case LIGHT_ROW1_COLUMN1_IN:
       espmega.outputs.setState(LIGHT_ROW1_COLUMN1, !espmega.outputs.getState(LIGHT_ROW1_COLUMN1));
       break;