diff -r 90517678cc4f -r 453da2cfceef qtmobility/src/systeminfo/qsysteminfo.cpp
--- a/qtmobility/src/systeminfo/qsysteminfo.cpp	Mon May 03 13:18:40 2010 +0300
+++ b/qtmobility/src/systeminfo/qsysteminfo.cpp	Fri May 14 16:41:33 2010 +0300
@@ -647,20 +647,23 @@
 }
 
 /*!
-    Returns the display brightness of \a screen in %, 1 - 100 scale.
+    Returns the display brightness of the screen with index \a screenNumber in %, 1 - 100 scale.
 
     Depending on platform, displayBrightness may not be available due to
     differing hardware, software or driver implementation. In which case this
     will return 0.
 
+    \sa QDesktopWidget::screenCount()
 */
-int QSystemDisplayInfo::displayBrightness(int screen)
+int QSystemDisplayInfo::displayBrightness(int screenNumber)
 {
-    return displayInfoPrivate()->displayBrightness(screen);
+    return displayInfoPrivate()->displayBrightness(screenNumber);
 }
 
 /*!
-    Returns the color depth of the screen \a screenNumber, in bits per pixel.
+    Returns the color depth of the screen with the index \a screenNumber, in bits per pixel.
+
+    \sa QDesktopWidget::screenCount()
 */
 int QSystemDisplayInfo::colorDepth(int screenNumber)
 {