diff --git a/src/southbridge/intel/lynxpoint/serialio.c b/src/southbridge/intel/lynxpoint/serialio.c
index 224e0f4..4fb84a5 100644
--- a/src/southbridge/intel/lynxpoint/serialio.c
+++ b/src/southbridge/intel/lynxpoint/serialio.c
@@ -119,7 +119,7 @@
 {
 	if (acpi_mode) {
 		/* Enable ACPI IRQ for IRQ13, IRQ7, IRQ6, IRQ5 in RCBA. */
-		RCBA32_OR(ACPIIRQEN, (1 << 13)|(1 << 7)|(1 << 6)|(1 << 5));
+		RCBA32_OR(ACPIIRQEN, (1 << 13) | (1 << 7) | (1 << 6) | (1 << 5));
 	}
 
 	/* Program IOBP CB000154h[12,9:8,4:0] = 1001100011111b. */