diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.c b/drivers/gpu/drm/nouveau/nouveau_bios.c
index 729d5fd..984187f 100644
--- a/drivers/gpu/drm/nouveau/nouveau_bios.c
+++ b/drivers/gpu/drm/nouveau/nouveau_bios.c
@@ -2568,7 +2568,7 @@ init_reset(struct nvbios *bios, uint16_t offset, struct init_exec *iexec)
 	/* no iexec->execute check by design */
 
 	pci_nv_19 = bios_rd32(bios, NV_PBUS_PCI_NV_19);
-	bios_wr32(bios, NV_PBUS_PCI_NV_19, pci_nv_19 & ~0xf00);
+	bios_wr32(bios, NV_PBUS_PCI_NV_19, pci_nv_19 & ~0x300);
 
 	bios_wr32(bios, reg, value1);