diff --git a/arch/powerpc/sysdev/ppc4xx_pci.c b/arch/powerpc/sysdev/ppc4xx_pci.c
index 3c2c14c32e7632dd344025d3dcea314bbb2e6e95..5abfcd157483b509e0f1c99ad0eacd693e05fb72 100644
--- a/arch/powerpc/sysdev/ppc4xx_pci.c
+++ b/arch/powerpc/sysdev/ppc4xx_pci.c
@@ -533,7 +533,7 @@ static void __init ppc4xx_probe_pcix_bridge(struct device_node *np)
  *
  */
 
-#define MAX_PCIE_BUS_MAPPED	0x10
+#define MAX_PCIE_BUS_MAPPED	0x40
 
 struct ppc4xx_pciex_port
 {