diff --git a/arch/mips/include/asm/pci.h b/arch/mips/include/asm/pci.h
index 69529624a005..193b4c6b7541 100644
--- a/arch/mips/include/asm/pci.h
+++ b/arch/mips/include/asm/pci.h
@@ -121,6 +121,7 @@ static inline void pci_dma_burst_advice(struct pci_dev *pdev,
 }
 #endif
 
+#ifdef CONFIG_PCI_DOMAINS
 #define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index
 
 static inline int pci_proc_domain(struct pci_bus *bus)
@@ -128,6 +129,7 @@ static inline int pci_proc_domain(struct pci_bus *bus)
 	struct pci_controller *hose = bus->sysdata;
 	return hose->need_domain_info;
 }
+#endif /* CONFIG_PCI_DOMAINS */
 
 #endif /* __KERNEL__ */