diff --git a/cpu/ppc4xx/cpu_init.c b/cpu/ppc4xx/cpu_init.c
index 9c6f79ea99a2c3f4dea2a94bbb605ae9c2803fef..2e0dd6f062fd44f9bc01c1e8593e7228dc34cd64 100644
--- a/cpu/ppc4xx/cpu_init.c
+++ b/cpu/ppc4xx/cpu_init.c
@@ -141,6 +141,11 @@ cpu_init_f (void)
 	 * Set EMAC noise filter bits
 	 */
 	mtdcr(cpc0_epctl, CPC0_EPRCSR_E0NFE | CPC0_EPRCSR_E1NFE);
+
+	/*
+	 * Enable the internal PCI arbiter
+	 */
+	mtdcr(cpc0_pci, mfdcr(cpc0_pci) | CPC0_PCI_HOST_CFG_EN | CPC0_PCI_ARBIT_EN);
 #endif /* CONFIG_405EP */
 #endif /* CONFIG_405EP */