diff --git a/rtdata/themes/RawTherapee-GTK3-20_.css b/rtdata/themes/RawTherapee-GTK3-20_.css
index e0e6fe096..94886d6fb 100644
--- a/rtdata/themes/RawTherapee-GTK3-20_.css
+++ b/rtdata/themes/RawTherapee-GTK3-20_.css
@@ -171,6 +171,7 @@ eventbox.frame {
     border-color: #565656;
 }
 
+/*** Scrollbar ***************************************/
 scrollbar {
     background-color: #303030;
 }
@@ -181,6 +182,42 @@ scrollbar slider:hover {
     background-color: #999999;
 }
 
+scrollbar:not(.overlay-indicator).horizontal slider,
+scrollbar.horizontal.hovering slider {
+    min-height: 6px;
+    min-width: 24px;
+}
+scrollbar:not(.overlay-indicator).horizontal.fine-tune slider,
+scrollbar.horizontal.hovering.fine-tune slider {
+    min-height: 4px;
+    border-width: 4px;
+    margin: 0 -1px;
+}
+scrollbar.horizontal.overlay-indicator:not(.hovering) slider {
+    min-width: 24px;
+    min-height: 3px;
+    margin: 0 2px;
+}
+
+scrollbar:not(.overlay-indicator).vertical slider,
+scrollbar.vertical.hovering slider {
+    min-height: 24px;
+    min-width: 6px;
+}
+scrollbar:not(.overlay-indicator).vertical.fine-tune slider,
+scrollbar.vertical.hovering.fine-tune slider {
+    min-width: 4px;
+    border-width: 4px;
+    margin: -1px 0;
+}
+scrollbar.vertical.overlay-indicator:not(.hovering) slider {
+    min-width: 3px;
+    min-height: 24px;
+    margin: 2px 0;
+}
+
+/**************************************************/
+
 button  {
     padding: 0;
     min-height: 5px;
diff --git a/rtengine/improcfun.cc b/rtengine/improcfun.cc
index 1676dc433..a197941b7 100644
--- a/rtengine/improcfun.cc
+++ b/rtengine/improcfun.cc
@@ -1793,7 +1793,7 @@ void ImProcFunctions::ciecam_02float (CieImage* ncie, float adap, int begh, int
             }
 
             float sum = 0.f;
-            float sumQ = 0.f;
+//            float sumQ = 0.f;
 
 #ifdef _OPENMP
             const int numThreads = min (max (width * height / 65536, 1), omp_get_max_threads());
@@ -1813,7 +1813,9 @@ void ImProcFunctions::ciecam_02float (CieImage* ncie, float adap, int begh, int
                     hist16Qthr.clear();
                 }
 
-                #pragma omp for reduction(+:sum,sumQ)
+                //    #pragma omp for reduction(+:sum,sumQ)
+                #pragma omp for reduction(+:sum)
+
 
                 for (int i = 0; i < height; i++)
                     for (int j = 0; j < width; j++) { //rough correspondence between L and J
@@ -1859,24 +1861,25 @@ void ImProcFunctions::ciecam_02float (CieImage* ncie, float adap, int begh, int
                         }
 
                         //estimation of wh only with La
-                        float whestim = 500.f;
-
-                        if (la < 200.f) {
-                            whestim = 200.f;
-                        } else if (la < 2500.f) {
-                            whestim = 350.f;
-                        } else {
-                            whestim = 500.f;
-                        }
+                        /*
+                           float whestim = 500.f;
 
+                           if (la < 200.f) {
+                           whestim = 200.f;
+                           } else if (la < 2500.f) {
+                           whestim = 350.f;
+                           } else {
+                           whestim = 500.f;
+                           }
+                        */
                         if (needQ) {
                             hist16Qthr[CLIP ((int) (32768.f * sqrt ((koef * (lab->L[i][j])) / 32768.f)))]++;  //for brightness Q : approximation for Q=wh*sqrt(J/100)  J not equal L
                             //perhaps  needs to introduce whestim ??
-                            //   hist16Qthr[ (int) (sqrtf ((koef * (lab->L[i][j])) * 32768.f))]++;  //for brightness Q : approximation for Q=wh*sqrt(J/100)  J not equal L
+                            //hist16Qthr[ (int) (sqrtf ((koef * (lab->L[i][j])) * 32768.f))]++;  //for brightness Q : approximation for Q=wh*sqrt(J/100)  J not equal L
                         }
 
                         sum += koef * lab->L[i][j]; //evaluate mean J to calculate Yb
-                        sumQ += whestim * sqrt ((koef * (lab->L[i][j])) / 32768.f);
+                        //sumQ += whestim * sqrt ((koef * (lab->L[i][j])) / 32768.f);
                         //can be used in case of...
                     }
 
diff --git a/rtgui/lensprofile.cc b/rtgui/lensprofile.cc
index fb4c34069..0c3b227aa 100644
--- a/rtgui/lensprofile.cc
+++ b/rtgui/lensprofile.cc
@@ -601,7 +601,7 @@ void LensProfilePanel::LFDbHelper::fillLensfunCameras()
         camnames[c.getMake()].insert(c.getModel());
 
         if (options.rtSettings.verbose) {
-            std::cout << "  found: " << c.getDisplayString() << std::endl;
+            std::cout << "  found: " << c.getDisplayString().c_str() << std::endl;
         }        
     }
     for (auto &p : camnames) {
@@ -630,7 +630,7 @@ void LensProfilePanel::LFDbHelper::fillLensfunLenses()
         lenses[make].insert(name);
 
         if (options.rtSettings.verbose) {
-            std::cout << "  found: " << l.getDisplayString() << std::endl;
+            std::cout << "  found: " << l.getDisplayString().c_str() << std::endl;
         }
     }
     for (auto &p : lenses) {