diff --git a/cfg/windows.cfg b/cfg/windows.cfg
index e41ca4513..80e8e2afc 100644
--- a/cfg/windows.cfg
+++ b/cfg/windows.cfg
@@ -4845,6 +4845,7 @@ HFONT CreateFont(
     <returnValue type="DWORD"/>
     <leak-ignore/>
     <use-retval/>
+    <pure/>
     <arg nr="1" direction="in">
       <not-uninit/>
     </arg>