diff --git a/rtengine/improccoordinator.cc b/rtengine/improccoordinator.cc
index 354b363ae..a51e5f77c 100644
--- a/rtengine/improccoordinator.cc
+++ b/rtengine/improccoordinator.cc
@@ -922,6 +922,8 @@ void ImProcCoordinator::updatePreviewImage(int todo, bool panningRelatedChange)
                 CurveFactory::complexCurvelocal(ecomp, black / 65535., hlcompr, hlcomprthresh, shcompr, br, cont, lumar,
                                                 hltonecurveloc, shtonecurveloc, tonecurveloc, lightCurveloc, avg,
                                                 sca);
+
+                // Locallab mask curve references are only shown for selected spot
                 if (sp == params->locallab.selspot) {
                     if (locallListener) {
                         locallListener->refChanged(huer, lumar, chromar);
diff --git a/rtgui/curveeditor.cc b/rtgui/curveeditor.cc
index 795378d7c..1cfaabffa 100644
--- a/rtgui/curveeditor.cc
+++ b/rtgui/curveeditor.cc
@@ -247,7 +247,7 @@ CurveEditor::CurveEditor (Glib::ustring text, CurveEditorGroup* ceGroup, CurveEd
 {
 
     bgHistValid = false;
-    locallabRef = 0.0;    
+    locallabRef = 0.0;
     remoteDrag = false;
     selected = DCT_Linear;
     bottomBarCP = nullptr;
@@ -330,11 +330,10 @@ void CurveEditor::updateLocallabBackground(double ref)
     // Copy Locallab reference value in the curve editor cache
     locallabRef = ref;
 
-     // Then call the curve editor group to eventually update the histogram
+    // Then call the curve editor group to eventually update the histogram
     subGroup->updateLocallabBackground(this);
 }
 
-
 // Open up the curve if it has modifications and it's not already opened
 // Returns: true if curve was non linear and opened
 bool CurveEditor::openIfNonlinear()
diff --git a/rtgui/locallab.cc b/rtgui/locallab.cc
index 60cbac456..030984ae4 100644
--- a/rtgui/locallab.cc
+++ b/rtgui/locallab.cc
@@ -232,7 +232,6 @@ Locallab::Locallab():
     defparams(nullptr),
     defpedited(nullptr),
     pe(nullptr)
-
 {
     ToolVBox* const panel = Gtk::manage(new ToolVBox());
 
diff --git a/rtgui/locallab.h b/rtgui/locallab.h
index 347604e40..75772cdb8 100644
--- a/rtgui/locallab.h
+++ b/rtgui/locallab.h
@@ -261,8 +261,6 @@ private:
     Gtk::Button* const lumaneutralButton;
     Gtk::Button* const lumacontrastPlusButton;
     sigc::connection lumacontrastMinusPressedConn, lumaneutralPressedConn, lumacontrastPlusPressedConn;
-//    Gtk::Label* transLabels;
-//    Gtk::Label* transLabels2;
     Gtk::Frame* maskcolFrame;
     Gtk::Frame* maskexpFrame;
     Gtk::Frame* maskSHFrame;
diff --git a/rtgui/myflatcurve.cc b/rtgui/myflatcurve.cc
index dd2478da9..4629d7936 100644
--- a/rtgui/myflatcurve.cc
+++ b/rtgui/myflatcurve.cc
@@ -165,7 +165,7 @@ void MyFlatCurve::draw ()
 
     Gdk::RGBA c;
 
-// Draw Locallab reference value in the background
+    // Draw Locallab reference value in the background
     if (locallabRef > 0.0) {
         cr->set_line_width(1.0);
         cr->move_to(double(graphX + 1), double(graphY - 1));
@@ -178,6 +178,7 @@ void MyFlatCurve::draw ()
         cr->fill();
         cr->stroke();
     }
+
     cr->set_line_width (1.0);
 
     // draw f(x)=0.5 line
diff --git a/rtgui/myflatcurve.h b/rtgui/myflatcurve.h
index da7d8905f..b24126068 100644
--- a/rtgui/myflatcurve.h
+++ b/rtgui/myflatcurve.h
@@ -140,6 +140,7 @@ public:
 
     void setPos(double pos, int chanIdx) override;
     void stopNumericalAdjustment() override;
+
     void updateLocallabBackground(double ref);
 };