diff --git a/cfg/std.cfg b/cfg/std.cfg
index 289414b46..96c1453c3 100644
--- a/cfg/std.cfg
+++ b/cfg/std.cfg
@@ -3875,9 +3875,7 @@
   <function name="c16rtomb">
     <noreturn>false</noreturn>
     <leak-ignore/>
-    <arg nr="1">
-      <not-uninit/>
-    </arg>
+    <arg nr="1"/>
     <arg nr="2">
       <not-uninit/>
     </arg>
@@ -3890,9 +3888,7 @@
   <function name="c32rtomb">
     <noreturn>false</noreturn>
     <leak-ignore/>
-    <arg nr="1">
-      <not-uninit/>
-    </arg>
+    <arg nr="1"/>
     <arg nr="2">
       <not-uninit/>
     </arg>
@@ -3905,9 +3901,7 @@
   <function name="mbrtoc16">
     <noreturn>false</noreturn>
     <leak-ignore/>
-    <arg nr="1">
-      <not-uninit/>
-    </arg>
+    <arg nr="1"/>
     <arg nr="2">
       <not-uninit/>
     </arg>
@@ -3923,9 +3917,7 @@
   <function name="mbrtoc32">
     <noreturn>false</noreturn>
     <leak-ignore/>
-    <arg nr="1">
-      <not-uninit/>
-    </arg>
+    <arg nr="1"/>
     <arg nr="2">
       <not-uninit/>
     </arg>