diff --git a/cfg/windows.cfg b/cfg/windows.cfg
index 47c770674..3e6354d28 100644
--- a/cfg/windows.cfg
+++ b/cfg/windows.cfg
@@ -3386,7 +3386,7 @@ HFONT CreateFont(
   </function>
   <!-- size_t _strftime_l(char *strDest, size_t maxsize, const char *format, const struct tm *timeptr, _locale_t locale); -->
   <!-- size_t _wcsftime_l(wchar_t *strDest, size_t maxsize, const wchar_t *format, const struct tm *timeptr, _locale_t locale);  -->
-  <function name="_strftime_l,_wcsftime_l,_tcsftime">
+  <function name="_strftime_l,_wcsftime_l">
     <noreturn>false</noreturn>
     <leak-ignore/>
     <arg nr="1">
@@ -3408,4 +3408,24 @@ HFONT CreateFont(
       <not-uninit/>
     </arg>
   </function>
+  <!-- size_t _tcsftime(char *s, size_t max, const char *fmt, const struct tm *p); -->
+  <function name="_tcsftime">
+    <noreturn>false</noreturn>
+    <leak-ignore/>
+    <arg nr="1">
+      <not-null/>
+    </arg>
+    <arg nr="2">
+      <not-uninit/>
+      <valid>0:</valid>
+    </arg>
+    <arg nr="3">
+      <not-null/>
+      <not-uninit/>
+    </arg>
+    <arg nr="4">
+      <not-null/>
+      <not-uninit/>
+    </arg>
+  </function>
 </def>