diff --git a/libhwcomposer/hwc_copybit.cpp b/libhwcomposer/hwc_copybit.cpp
index 65482d7..05aeb5e 100644
--- a/libhwcomposer/hwc_copybit.cpp
+++ b/libhwcomposer/hwc_copybit.cpp
@@ -352,10 +352,18 @@
             dx = (float)dst_w/(float)src_w;
             dy = (float)dst_h/(float)src_h;
 
-            if (dx > MAX_SCALE_FACTOR || dx < MIN_SCALE_FACTOR)
+            float scale_factor_max = MAX_SCALE_FACTOR;
+            float scale_factor_min = MIN_SCALE_FACTOR;
+
+            if (isAlphaPresent(layer)) {
+               scale_factor_max = MAX_SCALE_FACTOR/4;
+               scale_factor_min = MIN_SCALE_FACTOR*4;
+            }
+
+            if (dx > scale_factor_max || dx < scale_factor_min)
                 return false;
 
-            if (dy > MAX_SCALE_FACTOR || dy < MIN_SCALE_FACTOR)
+            if (dy > scale_factor_max || dy < scale_factor_min)
                 return false;
         }
     }