diff --git a/reactos/ReactOS.xml b/reactos/ReactOS.xml
index 421e642907a..f575319b03e 100644
--- a/reactos/ReactOS.xml
+++ b/reactos/ReactOS.xml
@@ -28,11 +28,12 @@
 		<define name="KDBG" value="1" />
 		<property name="DBG_OR_KDBG" value="true" />
 	</if>
+	<compilerflag>-Wpointer-arith</compilerflag>
 
 	<include>include</include>
-    <include>include/reactos</include>
+	<include>include/reactos</include>
 	<include>w32api/include</include>
-    <include>w32api/include/ddk</include>
+	<include>w32api/include/ddk</include>
 
 	<directory name="apps">
 		<xi:include href="apps/directory.xml" />