diff --git a/pkg/sentry/platform/kvm/physical_map.go b/pkg/sentry/platform/kvm/physical_map.go
index 208c0b4a1..d1a4147bc 100644
--- a/pkg/sentry/platform/kvm/physical_map.go
+++ b/pkg/sentry/platform/kvm/physical_map.go
@@ -115,6 +115,7 @@ func fillAddressSpace() (excludedRegions []region) {
 		for i := range excludedRegions {
 			if excludedRegions[i].virtual == addr+current {
 				excludedRegions[i].virtual = addr
+				excludedRegions[i].length += current
 				addr = 0
 				break
 			}