diff --git a/lib/rex/proto/http/client_request.rb b/lib/rex/proto/http/client_request.rb
index 7467ff1a37..1ab9adcd46 100644
--- a/lib/rex/proto/http/client_request.rb
+++ b/lib/rex/proto/http/client_request.rb
@@ -137,12 +137,16 @@ class ClientRequest
 
       opts['vars_post'].each_pair do |var,val|
         var = var.to_s
-        val = val.to_s
-
-        pstr << '&' if pstr.length > 0
-        pstr << (opts['encode_params'] ? set_encode_uri(var) : var)
-        pstr << '='
-        pstr << (opts['encode_params'] ? set_encode_uri(val) : val)
+        unless val.is_a?(Array)
+          val = [val]
+        end
+        val.each do |v|
+          v = v.to_s
+          pstr << '&' if pstr.length > 0
+          pstr << (opts['encode_params'] ? set_encode_uri(var) : var)
+          pstr << '='
+          pstr << (opts['encode_params'] ? set_encode_uri(v) : v)
+        end
       end
     else
       if opts['encode']