diff --git a/CMakeLists.txt b/CMakeLists.txt
index d5e45b7a..3caa276a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,7 +1,7 @@
 # - musrfit --- DKS -----------------------------------------------------------
 cmake_minimum_required(VERSION 3.17)
 
-project(musrfit VERSION 1.8.1 LANGUAGES C CXX)
+project(musrfit VERSION 1.8.2 LANGUAGES C CXX)
 
 #--- musrfit specific options -------------------------------------------------
 option(dks "build musrfit with DKS (GPU/MIC) support" ON)
diff --git a/src/musredit_qt5/mupp/plotter/PMuppCanvas.cpp b/src/musredit_qt5/mupp/plotter/PMuppCanvas.cpp
index 7ac028c0..84635563 100644
--- a/src/musredit_qt5/mupp/plotter/PMuppCanvas.cpp
+++ b/src/musredit_qt5/mupp/plotter/PMuppCanvas.cpp
@@ -169,6 +169,9 @@ void PMuppCanvas::HandleCmdKey(Int_t event, Int_t x, Int_t y, TObject *selected)
     Done(0);
   } else if (x == 'b') { // about
     new TGMsgBox(gClient->GetRoot(), 0, "About mupp", "created by Andreas Suter\nPSI/NUM/LMU/LEM\n2018", kMBIconAsterisk);
+  } else if (x == 'l') { // draw with lines
+    fWithLines = !fWithLines;
+    UpdateGraphs();
   }
 }
 
@@ -182,7 +185,10 @@ void PMuppCanvas::HandleCmdKey(Int_t event, Int_t x, Int_t y, TObject *selected)
  */
 void PMuppCanvas::HandleMenuPopup(Int_t id)
 {
-  if (id == P_MENU_ID_EXPORT) {
+  if (id == P_MENU_ID_WITH_LINE) {
+    fWithLines = !fWithLines;
+    UpdateGraphs();
+  } else if (id == P_MENU_ID_EXPORT) {
     ExportData();
   } else if (id == P_MENU_ID_ABOUT) {
     new TGMsgBox(gClient->GetRoot(), 0, "About mupp", "created by Andreas Suter\nPSI/NUM/LMU/LEM\n2017", kMBIconAsterisk);
@@ -267,6 +273,7 @@ void PMuppCanvas::InitMuppCanvas(const Char_t *title, Int_t wtopx, Int_t wtopy,
   fBar = fImp->GetMenuBar();
   fPopupMain = fBar->AddPopup("&Mupp");
 
+  fPopupMain->AddEntry("Toggle with&Line", P_MENU_ID_WITH_LINE);
   fPopupMain->AddEntry("Export &Data", P_MENU_ID_EXPORT);
   fPopupMain->AddSeparator();
   fPopupMain->AddEntry("A&bout", P_MENU_ID_ABOUT);
@@ -599,10 +606,14 @@ void PMuppCanvas::UpdateGraphs()
     }
 
     for (UInt_t i=0; i<fGraphE.size(); i++) {
-      fMultiGraph->Add(fGraphE[i], "p");
+      fMultiGraph->Add(fGraphE[i]);
     }
 
-    fMultiGraph->Draw("a");
+    if (fWithLines) {
+      fMultiGraph->Draw("ALP");
+    } else {
+      fMultiGraph->Draw("AP");
+    }
 
     // set x-axis limits. This is needed that the graphs x-axis starts at 0.0
     Double_t xmin=fMultiGraph->GetXaxis()->GetXmin();
diff --git a/src/musredit_qt5/mupp/plotter/PMuppCanvas.h b/src/musredit_qt5/mupp/plotter/PMuppCanvas.h
index 9cbe61d8..9e78e4bb 100644
--- a/src/musredit_qt5/mupp/plotter/PMuppCanvas.h
+++ b/src/musredit_qt5/mupp/plotter/PMuppCanvas.h
@@ -46,8 +46,9 @@
 #include "mupp.h"
 
 // Canvas menu id's
-#define P_MENU_ID_EXPORT 10001
-#define P_MENU_ID_ABOUT  10002
+#define P_MENU_ID_WITH_LINE 10001
+#define P_MENU_ID_EXPORT    10002
+#define P_MENU_ID_ABOUT     10003
 
 //--------------------------------------------------------------------------
 struct PDataPoint {
@@ -113,6 +114,8 @@ private:
   PDoubleVector fMarkerSizeList;
   PIntVector    fColorList;
 
+  bool fWithLines{false};
+
   virtual void CreateStyle();
   virtual void InitMuppCanvas(const Char_t* title, Int_t wtopx, Int_t wtopy, Int_t ww, Int_t wh);
 
diff --git a/src/musredit_qt6/mupp/plotter/PMuppCanvas.cpp b/src/musredit_qt6/mupp/plotter/PMuppCanvas.cpp
index 7ac028c0..84635563 100644
--- a/src/musredit_qt6/mupp/plotter/PMuppCanvas.cpp
+++ b/src/musredit_qt6/mupp/plotter/PMuppCanvas.cpp
@@ -169,6 +169,9 @@ void PMuppCanvas::HandleCmdKey(Int_t event, Int_t x, Int_t y, TObject *selected)
     Done(0);
   } else if (x == 'b') { // about
     new TGMsgBox(gClient->GetRoot(), 0, "About mupp", "created by Andreas Suter\nPSI/NUM/LMU/LEM\n2018", kMBIconAsterisk);
+  } else if (x == 'l') { // draw with lines
+    fWithLines = !fWithLines;
+    UpdateGraphs();
   }
 }
 
@@ -182,7 +185,10 @@ void PMuppCanvas::HandleCmdKey(Int_t event, Int_t x, Int_t y, TObject *selected)
  */
 void PMuppCanvas::HandleMenuPopup(Int_t id)
 {
-  if (id == P_MENU_ID_EXPORT) {
+  if (id == P_MENU_ID_WITH_LINE) {
+    fWithLines = !fWithLines;
+    UpdateGraphs();
+  } else if (id == P_MENU_ID_EXPORT) {
     ExportData();
   } else if (id == P_MENU_ID_ABOUT) {
     new TGMsgBox(gClient->GetRoot(), 0, "About mupp", "created by Andreas Suter\nPSI/NUM/LMU/LEM\n2017", kMBIconAsterisk);
@@ -267,6 +273,7 @@ void PMuppCanvas::InitMuppCanvas(const Char_t *title, Int_t wtopx, Int_t wtopy,
   fBar = fImp->GetMenuBar();
   fPopupMain = fBar->AddPopup("&Mupp");
 
+  fPopupMain->AddEntry("Toggle with&Line", P_MENU_ID_WITH_LINE);
   fPopupMain->AddEntry("Export &Data", P_MENU_ID_EXPORT);
   fPopupMain->AddSeparator();
   fPopupMain->AddEntry("A&bout", P_MENU_ID_ABOUT);
@@ -599,10 +606,14 @@ void PMuppCanvas::UpdateGraphs()
     }
 
     for (UInt_t i=0; i<fGraphE.size(); i++) {
-      fMultiGraph->Add(fGraphE[i], "p");
+      fMultiGraph->Add(fGraphE[i]);
     }
 
-    fMultiGraph->Draw("a");
+    if (fWithLines) {
+      fMultiGraph->Draw("ALP");
+    } else {
+      fMultiGraph->Draw("AP");
+    }
 
     // set x-axis limits. This is needed that the graphs x-axis starts at 0.0
     Double_t xmin=fMultiGraph->GetXaxis()->GetXmin();
diff --git a/src/musredit_qt6/mupp/plotter/PMuppCanvas.h b/src/musredit_qt6/mupp/plotter/PMuppCanvas.h
index 9cbe61d8..9e78e4bb 100644
--- a/src/musredit_qt6/mupp/plotter/PMuppCanvas.h
+++ b/src/musredit_qt6/mupp/plotter/PMuppCanvas.h
@@ -46,8 +46,9 @@
 #include "mupp.h"
 
 // Canvas menu id's
-#define P_MENU_ID_EXPORT 10001
-#define P_MENU_ID_ABOUT  10002
+#define P_MENU_ID_WITH_LINE 10001
+#define P_MENU_ID_EXPORT    10002
+#define P_MENU_ID_ABOUT     10003
 
 //--------------------------------------------------------------------------
 struct PDataPoint {
@@ -113,6 +114,8 @@ private:
   PDoubleVector fMarkerSizeList;
   PIntVector    fColorList;
 
+  bool fWithLines{false};
+
   virtual void CreateStyle();
   virtual void InitMuppCanvas(const Char_t* title, Int_t wtopx, Int_t wtopy, Int_t ww, Int_t wh);