diff --git a/sorting/Cocktail_Sort.c b/sorting/Cocktail_Sort.c
index 4fd0ef4d..909d54bf 100644
--- a/sorting/Cocktail_Sort.c
+++ b/sorting/Cocktail_Sort.c
@@ -21,6 +21,7 @@ void cocktailSort(int arr[], int size)
         changed = TRUE;
       }
     }
+    end--;
 
     if (changed == FALSE)
     {
@@ -38,6 +39,7 @@ void cocktailSort(int arr[], int size)
         changed = TRUE;
       }
     }
+    start++;
   }
 }