diff --git a/cfg/std.cfg b/cfg/std.cfg
index 0127907d8..6eaa28a05 100644
--- a/cfg/std.cfg
+++ b/cfg/std.cfg
@@ -1638,7 +1638,7 @@
     </arg>
   </function>
   <function name="strtok">
-    <use-retval/>
+    <!-- strtok may modify the first argument, so using the return value is not mandatory -->
     <noreturn>false</noreturn>
     <pure/>
     <leak-ignore/>