diff --git a/src/emucore/Settings.cxx b/src/emucore/Settings.cxx
index 539691213..aebec8847 100644
--- a/src/emucore/Settings.cxx
+++ b/src/emucore/Settings.cxx
@@ -61,7 +61,7 @@ Settings::Settings(OSystem* osystem)
 
   // TV filtering options
   setInternal("tv_filter", "0");
-  setInternal("tv_scanlines", "40");
+  setInternal("tv_scanlines", "25");
   setInternal("tv_scaninter", "true");
   // TV options when using 'custom' mode
   setInternal("tv_contrast", "0.0");
diff --git a/src/gui/VideoDialog.cxx b/src/gui/VideoDialog.cxx
index dee5fe9b7..69bcc4ebe 100644
--- a/src/gui/VideoDialog.cxx
+++ b/src/gui/VideoDialog.cxx
@@ -612,8 +612,8 @@ void VideoDialog::setDefaults()
       myTVMode->setSelected("0", "0");
 
       // TV scanline intensity and interpolation
-      myTVScanIntense->setValue(40);
-      myTVScanIntenseLabel->setLabel("40");
+      myTVScanIntense->setValue(25);
+      myTVScanIntenseLabel->setLabel("25");
       myTVScanInterpolate->setState(true);
 
       // Make sure that mutually-exclusive items are not enabled at the same time