diff --git a/legacy/elementary/ChangeLog b/legacy/elementary/ChangeLog
index 9e2c00e7ac..12e8ec8b41 100644
--- a/legacy/elementary/ChangeLog
+++ b/legacy/elementary/ChangeLog
@@ -1190,3 +1190,7 @@
 2013-03-29  Mike Blumenkrantz
 
         * Fix ctxpopup geometry when parent is an elm_win.
+
+2013-04-01  Jaehwan Kim
+
+        * Scroller decides whether the accelerator is on or not, depending on the velocity and the interval time of the flick event.
diff --git a/legacy/elementary/NEWS b/legacy/elementary/NEWS
index 0687d33422..0eec98041e 100644
--- a/legacy/elementary/NEWS
+++ b/legacy/elementary/NEWS
@@ -90,6 +90,7 @@ Improvements:
    * Improve gengrid item append performance.
    * Naviframe works for H/W Back key event.
    * Naviframe is now supproting focus_direction.
+   * Scroller decides whether the accelerator is on or not, depending on the velocity and the interval time of the flick event.
 
 Fixes:
 
diff --git a/legacy/elementary/src/lib/elm_interface_scrollable.c b/legacy/elementary/src/lib/elm_interface_scrollable.c
index f49e20904f..e64bd2bb3d 100644
--- a/legacy/elementary/src/lib/elm_interface_scrollable.c
+++ b/legacy/elementary/src/lib/elm_interface_scrollable.c
@@ -2280,6 +2280,7 @@ _elm_scroll_mouse_up_event_cb(void *data,
                            (vel > _elm_config->thumbscroll_momentum_threshold))
                          {
                             int minx, miny, mx, my, px, py;
+                            double tt = 0.0, dtt = 0.0;
 
                             eo_do(sid->pan_obj, elm_obj_pan_pos_min_get
                                   (&minx, &miny));
@@ -2288,23 +2289,13 @@ _elm_scroll_mouse_up_event_cb(void *data,
                             eo_do(sid->pan_obj, elm_obj_pan_pos_get(&px, &py));
                             sid->down.dx = ((double)dx / at);
                             sid->down.dy = ((double)dy / at);
-                            if (((sid->down.dx > 0) && (sid->down.pdx > 0)) ||
-                                ((sid->down.dx < 0) && (sid->down.pdx < 0)))
-                              if (px > minx && px < mx)
-                                sid->down.dx += (double)sid->down.pdx * 1.5;
-                            // FIXME: * 1.5 - probably should be config
-                            if (((sid->down.dy > 0) && (sid->down.pdy > 0)) ||
-                                ((sid->down.dy < 0) && (sid->down.pdy < 0)))
-                              if (py > miny && py < my)
-                                sid->down.dy += (double)sid->down.pdy * 1.5;
-                            // FIXME: * 1.5 - probably should be config
                             if (((sid->down.dx > 0) && (sid->down.pdx > 0)) ||
                                 ((sid->down.dx < 0) && (sid->down.pdx < 0)) ||
                                 ((sid->down.dy > 0) && (sid->down.pdy > 0)) ||
                                 ((sid->down.dy < 0) && (sid->down.pdy < 0)))
                               {
-                                 double tt = ecore_loop_time_get();
-                                 double dtt = tt - sid->down.anim_start;
+                                 tt = ecore_loop_time_get();
+                                 dtt = tt - sid->down.anim_start;
 
                                  if (dtt < 0.0) dtt = 0.0;
                                  else if (dtt >
@@ -2315,6 +2306,19 @@ _elm_scroll_mouse_up_event_cb(void *data,
                               }
                             else
                               sid->down.extra_time = 0.0;
+
+                            if (abs(sid->down.dx) > 500 && (dtt < 0.7) &&
+                                (((sid->down.dx > 0) && (sid->down.pdx > 0)) ||
+                                ((sid->down.dx < 0) && (sid->down.pdx < 0))))
+                              if (px > minx && px < mx)
+                                sid->down.dx += (double)sid->down.pdx * 2.5;
+                            // FIXME: > 500, < 0.7, * 1.5 - probably should be config
+                            if (abs(sid->down.dy) > 500 && (dtt < 0.7) &&
+                                (((sid->down.dy > 0) && (sid->down.pdy > 0)) ||
+                                ((sid->down.dy < 0) && (sid->down.pdy < 0))))
+                              if (py > miny && py < my)
+                                sid->down.dy += (double)sid->down.pdy * 2.5;
+                            // FIXME: > 500, < 0.7, * 1.5 - probably should be config
                             sid->down.pdx = sid->down.dx;
                             sid->down.pdy = sid->down.dy;
                             ox = -sid->down.dx;