diff --git a/arch/x86/pci/mrst.c b/arch/x86/pci/mrst.c
index 8bf2fcb88d04..d5c7aefe56ff 100644
--- a/arch/x86/pci/mrst.c
+++ b/arch/x86/pci/mrst.c
@@ -109,7 +109,7 @@ static int pci_device_update_fixed(struct pci_bus *bus, unsigned int devfn,
 			decode++;
 			decode = ~(decode - 1);
 		} else {
-			decode = ~0;
+			decode = 0;
 		}
 
 		/*