diff --git a/kaleid/kernel/io/pci.c b/kaleid/kernel/io/pci.c
index 7f5c66a..c80fcbe 100644
--- a/kaleid/kernel/io/pci.c
+++ b/kaleid/kernel/io/pci.c
@@ -160,7 +160,8 @@ void IoInitPCI()
     IoPciEnumerate();
     
     // Give R/W access to the configuration space
-    for(int i=0; i < 65536; i++) // 65536 = 256 * 32 * 8
+    int maxI = (256 * 32 * 8 * 4096) / KPAGESIZE;
+    for(int i=0; i < maxI; i++)
     {
         MmMapPage((void *)((ulong)pciConfigBaseAddress + i * KPAGESIZE),
                   (void *)((ulong)pciConfigBaseAddress + i * KPAGESIZE),