diff --git a/examples/dokk/glwin.py b/examples/dokk/glwin.py
index bf9a2fdc17fc06737aa7bfa3783f8b3a73f07f6d..7b1de9ffd3f31f8c93178a8ea74a7f704ec5260c 100644
--- a/examples/dokk/glwin.py
+++ b/examples/dokk/glwin.py
@@ -146,4 +146,4 @@ class DokkGLWin(gfx.GLWinBase):
       return self.canvas_.width()
     
     def Height(self):
-      return self.canvas_.height()
\ No newline at end of file
+      return self.canvas_.height()
diff --git a/examples/dokk/level.py b/examples/dokk/level.py
index 5030f8fe2eace86206beb8cd899fbc2f206e1ccb..f97f14a66e90863d80c7d1147f98e8edbf5c1a14 100644
--- a/examples/dokk/level.py
+++ b/examples/dokk/level.py
@@ -74,4 +74,4 @@ class Level:
   def Close(self):
     self.surface.Close()
     self.protein.Close()
-    self.ligand.Close()
\ No newline at end of file
+    self.ligand.Close()
diff --git a/examples/dokk/ligand.py b/examples/dokk/ligand.py
index aba6492f36f2b3e8ec53e6398302a95b1cc81ae8..8bcff90bfcb38ed0a2a813bb41fa7d456198b5e1 100644
--- a/examples/dokk/ligand.py
+++ b/examples/dokk/ligand.py
@@ -100,4 +100,4 @@ class Ligand:
      vec[1]< self.box_max[1] and vec[1]> self.box_min[1] and \
      vec[2]< self.box_max[2] and vec[2]> self.box_min[2] :
       return True
-    return False
\ No newline at end of file
+    return False