diff --git a/scanpy/preprocessing/_simple.py b/scanpy/preprocessing/_simple.py
index c3755050f2..540db5224f 100644
--- a/scanpy/preprocessing/_simple.py
+++ b/scanpy/preprocessing/_simple.py
@@ -315,7 +315,7 @@ def log1p(
     chunk_size
         `n_obs` of the chunks to process the data in.
     layer
-        Entry of layers to tranform.
+        Entry of layers to transform.
     obsm
         Entry of obsm to transform.