diff --git a/rtengine/rawimagesource.cc b/rtengine/rawimagesource.cc
index c639fafca..df803d951 100644
--- a/rtengine/rawimagesource.cc
+++ b/rtengine/rawimagesource.cc
@@ -5010,9 +5010,9 @@ void RawImageSource::getAutoWBMultipliers (double &rm, double &gm, double &bm)
 
     //    return ColorTemp (pow(avg_r/rn, 1.0/6.0)*img_r, pow(avg_g/gn, 1.0/6.0)*img_g, pow(avg_b/bn, 1.0/6.0)*img_b);
 
-    double reds   = avg_r / rn * refwb_red;
-    double greens = avg_g / gn * refwb_green;
-    double blues  = avg_b / bn * refwb_blue;
+    double reds   = avg_r / std::max(1, rn) * refwb_red;
+    double greens = avg_g / std::max(1, gn) * refwb_green;
+    double blues  = avg_b / std::max(1, bn) * refwb_blue;
 
     redAWBMul   = rm = imatrices.rgb_cam[0][0] * reds + imatrices.rgb_cam[0][1] * greens + imatrices.rgb_cam[0][2] * blues;
     greenAWBMul = gm = imatrices.rgb_cam[1][0] * reds + imatrices.rgb_cam[1][1] * greens + imatrices.rgb_cam[1][2] * blues;
diff --git a/rtgui/batchqueuepanel.cc b/rtgui/batchqueuepanel.cc
index 3a37996a0..fcccdf08a 100644
--- a/rtgui/batchqueuepanel.cc
+++ b/rtgui/batchqueuepanel.cc
@@ -41,7 +41,7 @@ static Glib::ustring makeFolderLabel(Glib::ustring path)
     return path;
 }
 
-BatchQueuePanel::BatchQueuePanel (FileCatalog* aFileCatalog)
+BatchQueuePanel::BatchQueuePanel (FileCatalog* aFileCatalog) : parent(nullptr)
 {
 
     batchQueue = Gtk::manage( new BatchQueue(aFileCatalog) );
diff --git a/rtgui/coordinateadjuster.cc b/rtgui/coordinateadjuster.cc
index 3664902e9..23d4d79d7 100644
--- a/rtgui/coordinateadjuster.cc
+++ b/rtgui/coordinateadjuster.cc
@@ -40,7 +40,7 @@ void Axis::setValues(Glib::ustring label, unsigned int decimal, double increment
     this->rangeUpperBound = valMax;
 }
 
-CoordinateAdjuster::AxisAdjuster::AxisAdjuster(CoordinateAdjuster *parent, const Axis *axis, char index) : idx(index), parent(parent)
+CoordinateAdjuster::AxisAdjuster::AxisAdjuster(CoordinateAdjuster *parent, const Axis *axis, char index) : idx(index), parent(parent), rangeLowerBound(0.f), rangeUpperBound(0.f)
 {
     label = Gtk::manage( new Gtk::Label(axis->label) );
     spinButton = Gtk::manage( new Gtk::SpinButton() );
diff --git a/rtgui/crop.cc b/rtgui/crop.cc
index 429edf0ff..4b9e22fd2 100644
--- a/rtgui/crop.cc
+++ b/rtgui/crop.cc
@@ -54,7 +54,7 @@ int notifyListenerUI (void* data)
 
 }
 
-Crop::Crop (): FoldableToolPanel(this, "crop", M("TP_CROP_LABEL"), false, true)
+Crop::Crop (): FoldableToolPanel(this, "crop", M("TP_CROP_LABEL"), false, true), opt(0), wDirty(true), hDirty(true), xDirty(true), yDirty(true), lastFixRatio(true)
 {
 
     clistener = nullptr;
diff --git a/rtgui/history.cc b/rtgui/history.cc
index 11f8c63a0..8e7adfab7 100644
--- a/rtgui/history.cc
+++ b/rtgui/history.cc
@@ -26,7 +26,7 @@ using namespace rtengine::procparams;
 
 Glib::ustring eventDescrArray[NUMOFEVENTS];
 
-History::History (bool bookmarkSupport) : blistener(nullptr), tpc (nullptr), bmnum (1)
+History::History (bool bookmarkSupport) : historyVPaned(nullptr), blistener(nullptr), tpc (nullptr), bmnum (1)
 {
 
     blistenerLock = false; // sets default that the Before preview will not be locked
diff --git a/rtgui/imagearea.cc b/rtgui/imagearea.cc
index 0842f4fb1..c0d334482 100644
--- a/rtgui/imagearea.cc
+++ b/rtgui/imagearea.cc
@@ -25,7 +25,7 @@
 #include "../rtengine/refreshmap.h"
 #include "options.h"
 
-ImageArea::ImageArea (ImageAreaPanel* p) : parent(p), firstOpen(true)
+ImageArea::ImageArea (ImageAreaPanel* p) : parent(p), firstOpen(true), fullImageWidth(0), fullImageHeight(0)
 {
 
     infotext = "";
diff --git a/rtgui/mycurve.cc b/rtgui/mycurve.cc
index dbb3eef5b..215eac429 100644
--- a/rtgui/mycurve.cc
+++ b/rtgui/mycurve.cc
@@ -21,7 +21,7 @@
 #include <cstring>
 #include <gdkmm/types.h>
 
-MyCurve::MyCurve () : pipetteR(-1.f), pipetteG(-1.f), pipetteB(-1.f), pipetteVal(-1.f), listener(nullptr), cursor_type( CSArrow)
+MyCurve::MyCurve () : pipetteR(-1.f), pipetteG(-1.f), pipetteB(-1.f), pipetteVal(-1.f), listener(nullptr), cursor_type(CSArrow), graphW(0), graphH(0), mod_type(Gdk::MODIFIER_MASK), cursorX(0), cursorY(0), snapToMinDistX(0.0), snapToMinDistY(0.0), snapToValX(0.0), snapToValY(0.0)
 {
 
     graphX = get_allocation().get_width() - RADIUS * 2;
diff --git a/rtgui/mydiagonalcurve.cc b/rtgui/mydiagonalcurve.cc
index bf146b03d..7ee619036 100644
--- a/rtgui/mydiagonalcurve.cc
+++ b/rtgui/mydiagonalcurve.cc
@@ -21,7 +21,7 @@
 #include <cstring>
 #include <gdkmm/types.h>
 
-MyDiagonalCurve::MyDiagonalCurve () : activeParam(-1), bghistvalid(false)
+MyDiagonalCurve::MyDiagonalCurve () : closest_point(0), clampedX(0.0), clampedY(0.0), deltaX(0.0), deltaY(0.0), distanceX(0.0), distanceY(0.0), ugpX(0.0), ugpY(0.0), activeParam(-1), bghistvalid(false)
 {
 
     graphW = get_allocation().get_width() - RADIUS * 2;
diff --git a/rtgui/partialpastedlg.h b/rtgui/partialpastedlg.h
index 438744863..8c0d4db5d 100644
--- a/rtgui/partialpastedlg.h
+++ b/rtgui/partialpastedlg.h
@@ -101,8 +101,6 @@ public:
     Gtk::CheckButton* raw_black;
     Gtk::CheckButton* raw_ca_autocorrect;
     Gtk::CheckButton* raw_caredblue;
-    Gtk::CheckButton* raw_cablue;
-    Gtk::CheckButton* raw_caautostrength;
     Gtk::CheckButton* raw_hotpix_filt;
     Gtk::CheckButton* raw_deadpix_filt;
     Gtk::CheckButton* raw_linenoise;
diff --git a/rtgui/thumbnail.cc b/rtgui/thumbnail.cc
index 54527a5d5..18bedf7b8 100644
--- a/rtgui/thumbnail.cc
+++ b/rtgui/thumbnail.cc
@@ -822,7 +822,7 @@ void Thumbnail::_loadThumbnail(bool firstTrial)
         tpp->init ();
     }
 
-    if (!initial_ && tpp) {
+    if (!initial_) {
         tw = tpp->getImageWidth (getProcParamsU(), th, imgRatio);    // this might return 0 if image was just building
     }
 }