diff --git a/app/src/main/java/com/foobnix/pdf/info/view/BrightnessHelper.java b/app/src/main/java/com/foobnix/pdf/info/view/BrightnessHelper.java
index 756e763e1..bc1ada969 100644
--- a/app/src/main/java/com/foobnix/pdf/info/view/BrightnessHelper.java
+++ b/app/src/main/java/com/foobnix/pdf/info/view/BrightnessHelper.java
@@ -373,7 +373,7 @@ public void onActoinDown(float x, float y) {
         this.x = x;
         this.y = y;
         isMovementStart = false;
-        currentPercent = getMinMaxValue(currentPercent + lastPercent);
+        updateCurrentValue();
     }
 
     public void onActionUp() {
@@ -400,15 +400,15 @@ public boolean onActionMove(final MotionEvent event) {
         float dx = Math.abs(x - event.getX());
 
         if ((isMovementStart || dy > Dips.DP_25) && event.getPointerCount() == 1 && x < BRIGHTNESS_WIDTH && dy > dx) {
-            isMovementStart = true;
-
-            if (y < Dips.screenHeight() / 3 || y > Dips.screenHeight() - Dips.screenHeight() / 3) {
-                lastPercent = (int) (yDiff * 100 / MIN);
+            float plus;
+            if (!isMovementStart) { // On first call update y and enable isMovementStart and do not change brightness.
+                this.y = event.getY();
+                plus = currentPercent;
             } else {
-                lastPercent = (int) (yDiff * 100 / MAX);
+                lastPercent = (int) (yDiff * 100 / MIN);
+                plus = getMinMaxValue(lastPercent + currentPercent);
             }
-
-            float plus = getMinMaxValue(lastPercent + currentPercent);
+            isMovementStart = true;
             EventBus.getDefault().post(new MessegeBrightness((int) plus));
         }
         return isMovementStart;
diff --git a/app/src/main/java/com/foobnix/sys/AdvGuestureDetector.java b/app/src/main/java/com/foobnix/sys/AdvGuestureDetector.java
index 91f3ad80f..7e9f7e054 100644
--- a/app/src/main/java/com/foobnix/sys/AdvGuestureDetector.java
+++ b/app/src/main/java/com/foobnix/sys/AdvGuestureDetector.java
@@ -300,14 +300,12 @@ public boolean onScroll(final MotionEvent e1, final MotionEvent e2, final float
         if (docCtrl.checkReadingTimer()) {
             return true;
         }
-
-        final float x = distanceX, y = distanceY;
-        d1 += x;
-        d2 += y;
-
         if (brightnessHelper.onActionMove(e2)) {
             return true;
         }
+        final float x = distanceX, y = distanceY;
+        d1 += x;
+        d2 += y;
 
         long delta = System.currentTimeMillis() - t;
         long value = AppSP.get().isLocked ? 5 : 10;