diff --git a/include/c64/cia.c b/include/c64/cia.c
index 4ac9312..245e4eb 100644
--- a/include/c64/cia.c
+++ b/include/c64/cia.c
@@ -16,7 +16,7 @@ void cia_init(void)
 	cia2.ddrb = 0x00;
 	cia1.ddra = 0xff;
 	
-	cia2.prb = 0x07;
+	cia2.pra = 0x07;
 	cia2.ddra = 0x3f;
 
 	char i0 = cia1.icr;