diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 27f7d56c9ac3..1dab1076f679 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -5361,7 +5361,7 @@ static void pci_quirk_enable_intel_rp_mpc_acs(struct pci_dev *dev)
 	if (!(mpc & INTEL_MPC_REG_IRBNCE)) {
 		pci_info(dev, "Enabling MPC IRBNCE\n");
 		mpc |= INTEL_MPC_REG_IRBNCE;
-		pci_write_config_word(dev, INTEL_MPC_REG, mpc);
+		pci_write_config_dword(dev, INTEL_MPC_REG, mpc);
 	}
 }