diff --git a/nselib/http.lua b/nselib/http.lua
index e384f5e76..c36c045e2 100644
--- a/nselib/http.lua
+++ b/nselib/http.lua
@@ -228,18 +228,6 @@ local function get_quoted_string(s, offset, crlf)
   return nil
 end
 
--- Get a ( token | quoted-string ) starting at offset.
--- @return the first index following the token or quoted-string, or nil if
--- nothing was found.
--- @return the token or quoted-string.
-local function get_token_or_quoted_string(s, offset, crlf)
-  if s:sub(offset, offset) == "\"" then
-    return get_quoted_string(s, offset)
-  else
-    return get_token(s, offset)
-  end
-end
-
 -- Returns the index just past the end of LWS.
 local function skip_lws(s, pos)
   local _, e
diff --git a/nselib/json.lua b/nselib/json.lua
index 8be63e069..8f392c174 100644
--- a/nselib/json.lua
+++ b/nselib/json.lua
@@ -172,17 +172,6 @@ end
 local function dbg(str,...)
   stdnse.debug1("Json:"..str, ...)
 end
-local function d4(str,...)
-  if nmap.debugging() > 3 then dbg(str, ...) end
-end
-local function d3(str,...)
-  if nmap.debugging() > 2 then dbg(str, ...) end
-end
-
---local dbg =stdnse.debug
-local function dbg_err(str,...)
-  stdnse.debug1("json-ERR:"..str, ...)
-end
 
 -- See section 2.5 for escapes.
 -- For convenience, ESCAPE_TABLE maps to escape sequences complete with
diff --git a/nselib/mongodb.lua b/nselib/mongodb.lua
index 545efc7f5..88082573b 100644
--- a/nselib/mongodb.lua
+++ b/nselib/mongodb.lua
@@ -57,13 +57,6 @@ local function dbg_err(str,...)
 end
 --local err =stdnse.log_error
 
--- Packs data into nullterminated string
---@param input the string to pack
---@return the packed nullterminated string
-local function make_nullterminated_string(input)
-  return bin.pack("z",input)
-end
-
 --Converts an element (key, value) into bson binary data
 --@param key the key name, must *NOT* contain . (period) or start with $
 --@param value, the element value
@@ -644,42 +637,5 @@ function queryResultToTable( resultTable )
   return result
 
 end
-----------------------------------------------------------------------------------
--- Test-code for debugging purposes below
-----------------------------------------------------------------------------------
-
-
---- Prints data (string) as Hex values, e.g so it more easily can
--- be compared with a packet dump
--- @param strData the data in a string format
-
-local function printBuffer(strData)
-  local out = ''
-  local ch
-  for i  = 1,strData:len() do
-    out = out .." "
-    ch =strData:byte(i)
-    if(ch < 16) then
-      ch = string.format("0%x",ch)
-    else ch = string.format("%x",ch)
-    end
-    --if ch > 64 and ch < 123 then
-    --  out = out .. string.char(ch)
-    --else
-    out = out .. ch
-    --end
-  end
-  print(out)
-end
-
--- function test()
---   local res
---   res = versionQuery()
---   print(type(res),res:len(),res)
---   local _, out= bin.unpack('C'..#res,res)
---   printBuffer(res)
--- end
---test()
-
 
 return _ENV;
diff --git a/nselib/sslv2.lua b/nselib/sslv2.lua
index 67f2785a7..8b2696a3d 100644
--- a/nselib/sslv2.lua
+++ b/nselib/sslv2.lua
@@ -108,21 +108,6 @@ end
 local SSL_MAX_RECORD_LENGTH_2_BYTE_HEADER = 32767
 local SSL_MAX_RECORD_LENGTH_3_BYTE_HEADER = 16383
 
-local function parse_record_header_1_2(header_1_2)
-  local _, b0, b1 = bin.unpack(">CC", header_1_2)
-  local msb = bit.band(b0, 0x80) == 0x80
-  local header_length
-  local record_length
-  if msb then
-    header_length = 2
-    record_length = bit.bor(bit.lshift(bit.band(b0, 0x7f), 8), b1)
-  else
-    header_length = 3
-    record_length = bit.bor(bit.lshift(bit.band(b0, 0x3f), 8), b1)
-  end
-  return header_length, record_length
-end
-
 -- 2 bytes of length minimum
 local SSL_MIN_HEADER = 2