diff --git a/cfg/windows.cfg b/cfg/windows.cfg
index c68cae645..e0dbd216f 100644
--- a/cfg/windows.cfg
+++ b/cfg/windows.cfg
@@ -5223,24 +5223,24 @@ HFONT CreateFont(
   </function>
   <function name="umask">
     <returnValue type="int"/>
-	<arg nr="1">
+    <arg nr="1">
       <not-uninit/>
     </arg>
-	<warn severity="style" alternatives="_umask" reason="Obsolete"/>
+    <warn severity="style" alternatives="_umask" reason="Obsolete"/>
   </function>
   <function name="_umask">
     <returnValue type="int"/>
-	<arg nr="1">
+    <arg nr="1">
       <not-uninit/>
     </arg>
   </function>
   <function name="_umask_s">
     <returnValue type="errno_t"/>
-	<arg nr="1">
-	<not-bool/>
+    <arg nr="1">
+      <not-bool/>
       <not-uninit/>
     </arg>
-	<arg nr="1">
+    <arg nr="1">
       <not-null/>
     </arg>
   </function>