diff --git a/Tools/Replay/Makefile b/Tools/Replay/Makefile
index 3959a1654b27326f7b36801a896b290a0182ed0b..648633eec0b2c2e077b86f0764403416727f26e0 100644
--- a/Tools/Replay/Makefile
+++ b/Tools/Replay/Makefile
@@ -1 +1,2 @@
+EXTRAFLAGS += "-DMATH_CHECK_INDEXES=1"
 include ../../mk/apm.mk