diff --git a/src/mainboard/msi/ms7135/Kconfig b/src/mainboard/msi/ms7135/Kconfig
index 0611be2ba9..586d403c25 100644
--- a/src/mainboard/msi/ms7135/Kconfig
+++ b/src/mainboard/msi/ms7135/Kconfig
@@ -58,4 +58,8 @@ config IRQ_SLOT_COUNT
 	int
 	default 13
 
+config CK804_PCI_E_X
+	int
+	default 0
+
 endif # BOARD_MSI_MS7135