diff --git a/drivers/serial/sunsab.c b/drivers/serial/sunsab.c
index d514e28..d2e0321 100644
--- a/drivers/serial/sunsab.c
+++ b/drivers/serial/sunsab.c
@@ -474,7 +474,7 @@
 {
 	struct uart_sunsab_port *up = (struct uart_sunsab_port *) port;
 
-	up->interrupt_mask0 |= SAB82532_ISR0_TCD;
+	up->interrupt_mask0 |= SAB82532_IMR0_TCD;
 	writeb(up->interrupt_mask1, &up->regs->w.imr0);
 }