diff --git a/nselib/mssql.lua b/nselib/mssql.lua
index ed3c8834e..836814203 100644
--- a/nselib/mssql.lua
+++ b/nselib/mssql.lua
@@ -1156,12 +1156,12 @@ ColumnData =
 				local days, mins
 				pos, days, mins = bin.unpack("<SS", data, pos)
 				
-				tds_epoch = os.time( {year = 1900, month = 1, day = 1, hour = 00, min = 00, sec = 00, isdst = nil} )
+				local tds_epoch = os.time( {year = 1900, month = 1, day = 1, hour = 00, min = 00, sec = 00, isdst = nil} )
 				-- determine the offset between the tds_epoch and the local system epoch
-				system_epoch			 = os.time( os.date("*t", 0))
-				tds_offset_seconds = os.difftime(tds_epoch,system_epoch)
+				local system_epoch			 = os.time( os.date("*t", 0))
+				local tds_offset_seconds = os.difftime(tds_epoch,system_epoch)
 
-				result_seconds = (days*24*60*60) + (mins*60)
+				local result_seconds = (days*24*60*60) + (mins*60)
 				coldata = os.date("!%b %d, %Y %H:%M:%S", tds_offset_seconds + result_seconds )
 				
 				return pos,coldata
diff --git a/scripts/http-slowloris-check.nse b/scripts/http-slowloris-check.nse
index 28cf7962e..1ce3bd46c 100644
--- a/scripts/http-slowloris-check.nse
+++ b/scripts/http-slowloris-check.nse
@@ -119,6 +119,7 @@ so, it starves the http server's resources causing Denial Of Service.
 	local report = vulns.Report:new(SCRIPT_NAME, host, port)
 	slowloris.state = vulns.STATE.NOT_VULN
 
+	local _
 	_, _, Bestopt = comm.tryssl(host, port, "GET / \r\n\r\n", {}) -- first determine if we need ssl
 	HalfHTTP = "POST /" .. tostring(math.random(100000, 900000)) .. " HTTP/1.1\r\n" ..
 	                  "Host: " .. host.ip .. "\r\n" ..