diff --git a/projects/mtg/include/Easing.h b/projects/mtg/include/Easing.h
index 93b4fc702..e12b751a4 100644
--- a/projects/mtg/include/Easing.h
+++ b/projects/mtg/include/Easing.h
@@ -25,7 +25,7 @@ public:
     void finish()
     {
         value = start_value + delta_value;
-        time_acc = 0; duration = 0;
+        time_acc = duration;
     }
 
     void update(float dt)
@@ -75,15 +75,15 @@ public:
 
     void updateValue()
     {
-        float time_tmp = time_acc * 2 / duration;
+        float time_tmp = (time_acc * 2) / duration;
         if (time_tmp < 1)
         {
-            value = delta_value/2*time_tmp*time_tmp + start_value;
+            value = delta_value * 0.5 * time_tmp * time_tmp + start_value;
         }
         else
         {
             time_tmp -= 1;
-            value = -delta_value/2 * (time_tmp*(time_tmp-2) - 1) + start_value;
+            value = - delta_value * 0.5 * (time_tmp * (time_tmp - 2) - 1) + start_value;
         }
     }
 };