diff --git a/src/inverter.c b/src/inverter.c
index aa6e7f7..4177e68 100644
--- a/src/inverter.c
+++ b/src/inverter.c
@@ -13,6 +13,7 @@ int main()
 
 	/* Make PB2 an output pin */
 	DDRB |= (1 << DDB2);
+	DDRC |= (1 << DDC7);
 
 	initCtcTimer0();