diff --git a/cfg/bsd.cfg b/cfg/bsd.cfg
index b743c7437..7e1d37714 100644
--- a/cfg/bsd.cfg
+++ b/cfg/bsd.cfg
@@ -295,4 +295,11 @@
   </function>
   <podtype name="FTS"/>
   <podtype name="FTSENT"/>
+  <!-- This type definitions refer to https://mandoc.bsd.lv/includes/sys/types.h.html -->
+  <podtype name="u_char" sign="u" stdtype="char"/>
+  <podtype name="u_short" sign="u" stdtype="short"/>
+  <podtype name="u_int" sign="u" stdtype="int"/>
+  <podtype name="u_long" sign="u" stdtype="long"/>
+  <!-- https://linux.die.net/man/3/tailq_head -->
+  <define name="TAILQ_HEAD(name,type)" value="struct name { type *first; type *last; }"/>
 </def>