diff --git a/xfa/fgas/layout/cfx_char.cpp b/xfa/fgas/layout/cfx_char.cpp
index 0782bd3..6c600ae 100644
--- a/xfa/fgas/layout/cfx_char.cpp
+++ b/xfa/fgas/layout/cfx_char.cpp
@@ -14,9 +14,9 @@
 
 namespace {
 
-#ifndef NDEBUG
+#if DCHECK_IS_ON()
 constexpr int32_t kBidiMaxLevel = 61;
-#endif  // NDEBUG
+#endif
 
 #undef PACK_NIBBLES
 #define PACK_NIBBLES(hi, lo) \