diff --git a/trunk/src/LV2/gx_tremolo.lv2/gx_tremolo.cpp b/trunk/src/LV2/gx_tremolo.lv2/gx_tremolo.cpp
index 442422efc..aa14452c6 100644
--- a/trunk/src/LV2/gx_tremolo.lv2/gx_tremolo.cpp
+++ b/trunk/src/LV2/gx_tremolo.lv2/gx_tremolo.cpp
@@ -33,6 +33,7 @@ class Gx_tremolo
   // pointer to buffer
   float*                       output;
   float*                       input;
+  float*                       reset;
   // pointer to dsp class
   PluginLV2*                   tremolo_st;
   // private functions
@@ -97,6 +98,9 @@ void Gx_tremolo::connect_mono(uint32_t port,void* data)
     case EFFECTS_INPUT:
       input = static_cast<float*>(data);
       break;
+    case RESET:
+      reset = static_cast<float*>(data);
+      break;
     default:
       break;
     }
@@ -131,6 +135,7 @@ void Gx_tremolo::run_dsp_mono(uint32_t n_samples)
   if (n_samples< 1) return;
   tremolo_st->mono_audio(static_cast<int>(n_samples), input,
                         output, tremolo_st);
+  if ((*reset)>0) tremolo_st->clear_state(tremolo_st);
 }
 
 void Gx_tremolo::connect_all_mono_ports(uint32_t port, void* data)
diff --git a/trunk/src/LV2/gx_tremolo.lv2/gx_tremolo.h b/trunk/src/LV2/gx_tremolo.lv2/gx_tremolo.h
index 4cfbe9b37..09c017202 100644
--- a/trunk/src/LV2/gx_tremolo.lv2/gx_tremolo.h
+++ b/trunk/src/LV2/gx_tremolo.lv2/gx_tremolo.h
@@ -35,6 +35,7 @@ typedef enum
   FREQ,
   EFFECTS_OUTPUT,
   EFFECTS_INPUT,
+  RESET,
 } PortIndex;
 
 #endif //SRC_HEADERS_GXEFFECTS_H_
diff --git a/trunk/src/LV2/gx_tremolo.lv2/gx_tremolo.ttl b/trunk/src/LV2/gx_tremolo.lv2/gx_tremolo.ttl
index 0adb57313..53a814dfc 100644
--- a/trunk/src/LV2/gx_tremolo.lv2/gx_tremolo.ttl
+++ b/trunk/src/LV2/gx_tremolo.lv2/gx_tremolo.ttl
@@ -26,6 +26,7 @@
 @prefix guiext: <http://lv2plug.in/ns/extensions/ui#>.
 @prefix time: <http://lv2plug.in/ns/ext/time#>.
 @prefix units: <http://lv2plug.in/ns/extensions/units#> .
+@prefix pprop: <http://lv2plug.in/ns/ext/port-props#> .
 
 <http://guitarix.sourceforge.net#me>
 	a foaf:Person ;
@@ -115,6 +116,16 @@ Model of a vactrol tremolo unit by "transmogrify"
         lv2:index 5 ;
         lv2:symbol "in" ;
         lv2:name "In" ;
+    ]      , [
+        a lv2:InputPort ,
+            lv2:ControlPort ;
+        lv2:index 6 ;
+        lv2:portProperty lv2:integer, pprop:trigger;
+        lv2:symbol "reset" ;
+        lv2:name "Reset" ;
+        lv2:default 0.0 ;
+        lv2:minimum 0.0 ;
+        lv2:maximum 1.0 ;
     ] .
 
 <http://guitarix.sourceforge.net/plugins/gx_tremolo#gui>
diff --git a/trunk/src/LV2/gx_tremolo.lv2/gx_tremolo_ui.cpp b/trunk/src/LV2/gx_tremolo.lv2/gx_tremolo_ui.cpp
index 229532d7f..68cbf0e25 100644
--- a/trunk/src/LV2/gx_tremolo.lv2/gx_tremolo_ui.cpp
+++ b/trunk/src/LV2/gx_tremolo.lv2/gx_tremolo_ui.cpp
@@ -31,7 +31,7 @@
 -----------------------------------------------------------------------
 ----------------------------------------------------------------------*/
 
-#define CONTROLS 4
+#define CONTROLS 5
 
 /*---------------------------------------------------------------------
 -----------------------------------------------------------------------    
@@ -72,10 +72,15 @@ void plugin_create_controller_widgets(X11_UI *ui, const char * plugin_uri) {
     set_adjustment(ui->widget[2]->adj,50.0, 50.0, 0.0, 100.0, 0.1, CL_CONTINUOS);
     adj_set_scale(ui->widget[2]->adj, 5.0);
 
+    ui->widget[4] = add_button(ui->win, "Reset",40, 215,40,30);
+    ui->widget[4]->parent_struct = ui;
+    ui->widget[4]->data = RESET;
+    ui->widget[4]->func.value_changed_callback = value_changed;
+
     // create combobox widgets
     const char* model[] = {"triangle","sine"};
     size_t len = sizeof(model) / sizeof(model[0]);
-    ui->widget[3] = add_my_combobox(ui->widget[3], SINE, "Mode", model, len, 0, ui, 40, 215, 180, 30);
+    ui->widget[3] = add_my_combobox(ui->widget[3], SINE, "Mode", model, len, 0, ui, 80, 215, 140, 30);
 }
 
 void plugin_cleanup(X11_UI *ui) {