diff --git a/junifer/preprocess/smoothing/_nilearn_smoothing.py b/junifer/preprocess/smoothing/_nilearn_smoothing.py
index 30f5716055..1ef0498ee0 100644
--- a/junifer/preprocess/smoothing/_nilearn_smoothing.py
+++ b/junifer/preprocess/smoothing/_nilearn_smoothing.py
@@ -61,8 +61,8 @@ def preprocess(
 
         Returns
         -------
-            Niimg-like object
-                The preprocessed image(s).
+        Niimg-like object
+            The preprocessed image(s).
 
         """
         logger.info("Smoothing using nilearn")