diff --git a/minigrid/envs/wfc/wfcenv.py b/minigrid/envs/wfc/wfcenv.py
index 72585de5a..958a48422 100644
--- a/minigrid/envs/wfc/wfcenv.py
+++ b/minigrid/envs/wfc/wfcenv.py
@@ -93,7 +93,7 @@ class WFCEnv(MiniGridEnv):
     ```
 
     ## Research
-     
+
     Adapted for `Minigrid` by the following work.
 
     ```bibtex