diff --git a/docs/blob_alignment.rst b/docs/blob_alignment.rst
index df7a6e9..89a726f 100644
--- a/docs/blob_alignment.rst
+++ b/docs/blob_alignment.rst
@@ -34,6 +34,7 @@ Instantiating a single blob as follows results in a unaligned blob:
       pos_y=5,
       t_init=0,
       t_drain=1e10,
+      blob_alignment=True,
   )
 
 .. image:: alignment_false.gif