diff --git a/rtengine/improccoordinator.cc b/rtengine/improccoordinator.cc
index 8a6fd06e4..fbdddf63a 100644
--- a/rtengine/improccoordinator.cc
+++ b/rtengine/improccoordinator.cc
@@ -2308,8 +2308,8 @@ void ImProcCoordinator::updatePreviewImage(int todo, bool panningRelatedChange)
                     tempsym = params->colorappearance.tempout;
                     greensym = params->colorappearance.greenout;
                 }
-                if (params->colorappearance.enabled) {
-                    acListener->wbCamChanged(tempsym, greensym);    //real temp and tint.
+                if (params->colorappearance.enabled  && acListener) {
+                    acListener->wbCamChanged(tempsym, greensym, params->colorappearance.autotempout);    //real temp and tint.
                 }
 
             } else {
diff --git a/rtengine/rtengine.h b/rtengine/rtengine.h
index fdd6676e6..e76d17336 100644
--- a/rtengine/rtengine.h
+++ b/rtengine/rtengine.h
@@ -372,7 +372,7 @@ public :
     virtual void autoCamChanged(double ccam, double ccamout) = 0;
     virtual void adapCamChanged(double cadap) = 0;
     virtual void ybCamChanged(int yb) = 0;
-    virtual void wbCamChanged(double tem, double tin) = 0;
+    virtual void wbCamChanged(double tem, double tin, bool autotemp) = 0;
 
 };
 
diff --git a/rtgui/colorappearance.cc b/rtgui/colorappearance.cc
index 0390ef869..d18cddcad 100644
--- a/rtgui/colorappearance.cc
+++ b/rtgui/colorappearance.cc
@@ -1880,18 +1880,36 @@ void ColorAppearance::adapCamChanged (double cadap)
 }
 
 
-void ColorAppearance::wbCamChanged (double temp, double tin)
+void ColorAppearance::wbCamChanged (double temp, double tin, bool autotemp)
 {//reactivate this function
 
     idle_register.add(
-        [this, temp, tin]() -> bool
+        [this, temp, tin, autotemp]() -> bool
+
         {
+            if (temp != tempout->getValue()) {
+                disableListener();
+                tempout->setValue(temp);
+                enableListener();
+                listener->panelChanged (EvCATtempout, tempout->getTextValue());
+            }
+            if (tin != greenout->getValue()) {
+                disableListener();
+                greenout->setValue(tin);
+                enableListener();
+                listener->panelChanged (EvCATgreenout, greenout->getTextValue());
+            }
+            /*
             disableListener();
             tempout->setValue(temp);
             greenout->setValue(tin);
             enableListener();
-            listener->panelChanged (EvCATgreenout, greenout->getTextValue());
-            listener->panelChanged (EvCATtempout, tempout->getTextValue());
+
+            if(!autotemp) {
+                listener->panelChanged (EvCATgreenout, "");//greenout->getTextValue());
+                listener->panelChanged (EvCATtempout, "");//tempout->getTextValue());
+            }*/
+
             return false;
         }
     );
diff --git a/rtgui/colorappearance.h b/rtgui/colorappearance.h
index 714f3e557..e8f6084cd 100644
--- a/rtgui/colorappearance.h
+++ b/rtgui/colorappearance.h
@@ -66,7 +66,7 @@ public:
     void autoCamChanged (double ccam, double ccamout) override;
     bool autoCamComputed_ ();
     void adapCamChanged (double cadap) override;
-    void wbCamChanged(double tem, double tin) override;
+    void wbCamChanged(double tem, double tin, bool autotemp) override;
     bool adapCamComputed_ ();
     void ybCamChanged (int yb) override;
     bool ybCamComputed_ ();