diff --git a/reactos/lib/inflib/inflib.rbuild b/reactos/lib/inflib/inflib.rbuild
index 6fe1769c512..1a8dad5eb6e 100644
--- a/reactos/lib/inflib/inflib.rbuild
+++ b/reactos/lib/inflib/inflib.rbuild
@@ -3,7 +3,6 @@
 <group>
 <module name="inflib" type="staticlibrary">
 	<include base="inflib">.</include>
-	<define name="__NO_CTYPE_INLINES" />
 	<file>infcore.c</file>
 	<file>infget.c</file>
 	<file>infput.c</file>