diff --git a/cfg/std.cfg b/cfg/std.cfg
index dace8daf0..7af867d89 100644
--- a/cfg/std.cfg
+++ b/cfg/std.cfg
@@ -1846,6 +1846,7 @@ The obsolete function 'gets' is called. With 'gets' you'll get a buffer overrun
     <pure/>
     <noreturn>false</noreturn>
     <leak-ignore/>
+    <returnValue>arg1&gt;0?arg1:-arg1</returnValue>
     <arg nr="1">
       <not-uninit/>
     </arg>