diff --git a/grc/flow_control/gsm_burst_type_filter.xml b/grc/flow_control/gsm_burst_type_filter.xml
index a615961..d7d86f4 100644
--- a/grc/flow_control/gsm_burst_type_filter.xml
+++ b/grc/flow_control/gsm_burst_type_filter.xml
@@ -13,13 +13,13 @@
   </param>
 
   <sink>
-    <name>in</name>
+    <name>bursts_in</name>
     <type>message</type>
     <optional>1</optional>
   </sink>
 
   <source>
-    <name>out</name>
+    <name>bursts_out</name>
     <type>message</type>
     <optional>1</optional>
   </source>
diff --git a/lib/flow_control/burst_type_filter_impl.cc b/lib/flow_control/burst_type_filter_impl.cc
index 542a004..c8bbd7e 100644
--- a/lib/flow_control/burst_type_filter_impl.cc
+++ b/lib/flow_control/burst_type_filter_impl.cc
@@ -52,10 +52,10 @@
     {
         set_selected_burst_types(selected_burst_types);
     
-        message_port_register_in(pmt::mp("in"));
-        message_port_register_out(pmt::mp("out"));
+        message_port_register_in(pmt::mp("bursts_in"));
+        message_port_register_out(pmt::mp("bursts_out"));
         
-        set_msg_handler(pmt::mp("in"), boost::bind(&burst_type_filter_impl::process_burst, this, _1));
+        set_msg_handler(pmt::mp("bursts_in"), boost::bind(&burst_type_filter_impl::process_burst, this, _1));
     }
 
     /*
@@ -69,15 +69,14 @@
           return;
 
         if (d_filter_policy == FILTER_POLICY_PASS_ALL) {
-          message_port_pub(pmt::mp("out"), msg);
+          message_port_pub(pmt::mp("bursts_out"), msg);
           return;
         }
 
         gsmtap_hdr * header = (gsmtap_hdr *)pmt::blob_data(pmt::cdr(msg));
-//        std::cout << "header->type: " << (int)(header->sub_type) << std::endl; 
         if (std::find(d_selected_burst_types.begin(), d_selected_burst_types.end(), header->sub_type) != d_selected_burst_types.end()) //check if burst type is listed in burst types to pass
         {
-            message_port_pub(pmt::mp("out"), msg);
+            message_port_pub(pmt::mp("bursts_out"), msg);
         }
     }