diff --git a/reactos/dll/win32/crtdll/crtdll.rbuild b/reactos/dll/win32/crtdll/crtdll.rbuild
index de90f7decb4..1695350d39a 100644
--- a/reactos/dll/win32/crtdll/crtdll.rbuild
+++ b/reactos/dll/win32/crtdll/crtdll.rbuild
@@ -5,7 +5,6 @@
 	<define name="USE_MSVCRT_PREFIX" />
 	<define name="_MSVCRT_LIB_" />
 	<define name="_MSVCRT_" />
-	<define name="__NO_CTYPE_INLINES" />
 	<define name="_CTYPE_DISABLE_MACROS" />
 	<define name="_NO_INLINING" />