diff --git a/polymer/eduke32/source/lunatic/doc/lunacon.txt b/polymer/eduke32/source/lunatic/doc/lunacon.txt
index 9ae7a4147..395b9dc43 100644
--- a/polymer/eduke32/source/lunatic/doc/lunacon.txt
+++ b/polymer/eduke32/source/lunatic/doc/lunacon.txt
@@ -270,7 +270,7 @@ where
 
 * allowed first characters are: letters, digits, and those in ```_*?`''
 * allowed following characters are the same as allowed first characters, plus
-  ``+++++'' and ``++-++'' .
+  ``+++++'', ``++-++'' and ``++.++''.
 
 // ^ `+` and `-`
 
diff --git a/polymer/eduke32/source/lunatic/lunacon.lua b/polymer/eduke32/source/lunatic/lunacon.lua
index defcf7550..46f804085 100644
--- a/polymer/eduke32/source/lunatic/lunacon.lua
+++ b/polymer/eduke32/source/lunatic/lunacon.lua
@@ -575,7 +575,7 @@ end
 -- NOTE: in C-CON, the slash and backslash can also be part of an identifier,
 -- but this is likely to support file names in other places.
 local BAD_ID_CHARS0 = "_*?"  -- allowed 1st identifier chars
-local BAD_ID_CHARS1 = "_*-+?"  -- allowed following identifier chars
+local BAD_ID_CHARS1 = "_*-+?."  -- allowed following identifier chars
 
 local function truetab(tab)
     local ttab = {}