diff --git a/frontend/apps/reader/modules/readerkoptlistener.lua b/frontend/apps/reader/modules/readerkoptlistener.lua
index 2a09a9e30..455c5d7c4 100644
--- a/frontend/apps/reader/modules/readerkoptlistener.lua
+++ b/frontend/apps/reader/modules/readerkoptlistener.lua
@@ -21,7 +21,7 @@ function ReaderKoptListener:onReadSettings(config)
     normal_zoom_mode = ReaderZooming.zoom_mode_label[normal_zoom_mode] and normal_zoom_mode or ReaderZooming.DEFAULT_ZOOM_MODE
     self.normal_zoom_mode = normal_zoom_mode
     self:setZoomMode(normal_zoom_mode)
-    self.ui:handleEvent(Event:new("GammaUpdate", self.document.configurable.contrast))
+    self.ui:handleEvent(Event:new("GammaUpdate", self.document.configurable.contrast, true)) -- no notification
     -- since K2pdfopt v2.21 negative value of word spacing is also used, for config
     -- compatability we should manually change previous -1 to a more reasonable -0.2
     if self.document.configurable.word_spacing == -1 then
diff --git a/frontend/apps/reader/modules/readerview.lua b/frontend/apps/reader/modules/readerview.lua
index 220894527..3bce5eba9 100644
--- a/frontend/apps/reader/modules/readerview.lua
+++ b/frontend/apps/reader/modules/readerview.lua
@@ -955,12 +955,14 @@ function ReaderView:onReaderFooterVisibilityChange()
     end
 end
 
-function ReaderView:onGammaUpdate(gamma)
+function ReaderView:onGammaUpdate(gamma, no_notification)
     self.state.gamma = gamma
     if self.page_scroll then
         self.ui:handleEvent(Event:new("UpdateScrollPageGamma", gamma))
     end
-    Notification:notify(T(_("Contrast set to: %1."), gamma))
+    if not no_notification then
+        Notification:notify(T(_("Contrast set to: %1."), gamma))
+    end
 end
 
 -- For ReaderKOptListener