diff --git a/ui/build/kati.go b/ui/build/kati.go
index de8dbf4..b54872c 100644
--- a/ui/build/kati.go
+++ b/ui/build/kati.go
@@ -93,6 +93,10 @@
 		args = append(args, "--werror_overriding_commands")
 	}
 
+	if !config.BuildBrokenPhonyTargets() {
+		args = append(args, "--werror_real_to_phony", "--werror_phony_looks_real")
+	}
+
 	if !config.Environment().IsFalse("KATI_EMULATE_FIND") {
 		args = append(args, "--use_find_emulator")
 	}