diff --git a/pkg/api/validation/validation.go b/pkg/api/validation/validation.go
index 65598335d76..fdfb6b0dac5 100644
--- a/pkg/api/validation/validation.go
+++ b/pkg/api/validation/validation.go
@@ -1421,7 +1421,7 @@ func AccumulateUniqueHostPorts(containers []api.Container, accumulator *sets.Str
 			if port == 0 {
 				continue
 			}
-			str := fmt.Sprintf("%d/%s", port, ctr.Ports[pi].Protocol)
+			str := fmt.Sprintf("%s/%s/%d", ctr.Ports[pi].Protocol, ctr.Ports[pi].HostIP, port)
 			if accumulator.Has(str) {
 				allErrs = append(allErrs, field.Duplicate(idxPath.Child("hostPort"), str))
 			} else {