diff --git a/cfg/posix.cfg b/cfg/posix.cfg
index a12b7adc4..619247785 100644
--- a/cfg/posix.cfg
+++ b/cfg/posix.cfg
@@ -571,6 +571,50 @@
       <not-uninit/>
     </arg>
   </function>
+  <!-- void openlog(const char *ident, int option, int facility); -->
+  <function name="openlog">
+    <noreturn>false</noreturn>
+    <leak-ignore/>
+    <arg nr="1">
+      <not-uninit/>
+    </arg>
+    <arg nr="2">
+      <not-uninit/>
+    </arg>
+    <arg nr="3">
+      <not-uninit/>
+    </arg>
+  </function>
+  <!-- void syslog(int priority, const char *format, ...); -->
+  <function name="syslog">
+    <noreturn>false</noreturn>
+    <leak-ignore/>
+    <formatstr/>
+    <arg nr="1">
+      <not-uninit/>
+    </arg>
+    <arg nr="2">
+      <formatstr/>
+    </arg>
+    <arg nr="any">
+      <not-uninit/>
+    </arg>
+  </function>
+  <!-- void vsyslog(int priority, const char *format, va_list ap); -->
+  <function name="vsyslog">
+    <noreturn>false</noreturn>
+    <leak-ignore/>
+    <formatstr/>
+    <arg nr="1">
+      <not-uninit/>
+    </arg>
+    <arg nr="2">
+      <formatstr/>
+    </arg>
+    <arg nr="any">
+      <not-uninit/>
+    </arg>
+  </function>
   <memory>
     <dealloc>free</dealloc>
     <alloc init="true">strdup</alloc>