diff --git a/mobject/mobject.py b/mobject/mobject.py
index 53509d0e..0f493b19 100644
--- a/mobject/mobject.py
+++ b/mobject/mobject.py
@@ -770,10 +770,10 @@ class Mobject(Container):
             self.null_point_align(mobject)
         self_count = len(self.submobjects)
         mob_count = len(mobject.submobjects)
-        diff = abs(self_count-mob_count)
-        if self_count < mob_count:
-            self.add_n_more_submobjects(diff)
-        elif mob_count < self_count:
+        diff = self_count-mob_count
+        if diff < 0:
+            self.add_n_more_submobjects(-diff)
+        elif diff > 0:
             mobject.add_n_more_submobjects(diff)
         return self
 
diff --git a/mobject/vectorized_mobject.py b/mobject/vectorized_mobject.py
index c64851fb..a3eee4d4 100644
--- a/mobject/vectorized_mobject.py
+++ b/mobject/vectorized_mobject.py
@@ -42,7 +42,8 @@ class VMobject(Mobject):
                        stroke_width = None,
                        fill_color = None, 
                        fill_opacity = None,
-                       family = True):
+                       family = True
+                       ):
         if stroke_color is not None:
             self.stroke_rgb = color_to_rgb(stroke_color)
         if fill_color is not None: