diff --git a/skimage/io/_plugins/pil_plugin.py b/skimage/io/_plugins/pil_plugin.py
index 19388a2e..decf0281 100644
--- a/skimage/io/_plugins/pil_plugin.py
+++ b/skimage/io/_plugins/pil_plugin.py
@@ -179,7 +179,7 @@ def imsave(fname, arr, format_str=None):
     floating point.
 
     All other image formats use the Python Imaging Libary.
-    See PIL docs [1] for a list of other supported formats.
+    See PIL docs [2] for a list of other supported formats.
     All images besides single channel PNGs are converted using `img_as_uint8`.
     Single Channel PNGS have the following behavior:
     - Integer values in [0, 255] and Boolean types -> img_as_uint8