diff --git a/doc/catalog.json b/doc/catalog.json
deleted file mode 100644
index 98f30b8acdaa0dc0be5153dffd07775e6ed54faf..0000000000000000000000000000000000000000
--- a/doc/catalog.json
+++ /dev/null
@@ -1,26 +0,0 @@
-{
-    "numpy": {
-        "version": {
-            "latest": "https://numpy.org/doc/stable/"
-        },
-        "sources": {
-            "readthedocs": "numpy"
-        }
-    },
-    "matplotlib": {
-        "version": {
-            "latest": "https://matplotlib.org/stable/"
-        },
-        "sources": {
-            "readthedocs": "matplotlib"
-        }
-    },
-    "PIL": {
-        "version": {
-            "latest": "https://pillow.readthedocs.io/en/latest/"
-        },
-        "sources": {
-            "readthedocs": "pillow"
-        }
-    }
-}
diff --git a/doc/conf.py b/doc/conf.py
index 7472718a7aaa4ca2bb0e71bd7616946eab639d85..6b6ac720848c4b86fa9ecc4ca52e35edd5c9d141 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -110,6 +110,6 @@ auto_intersphinx_packages = [
     ("python", "3"),
     "numpy",
     "matplotlib",
-    "PIL",
+    "pillow",
 ]
 auto_intersphinx_catalog = "catalog.json"
diff --git a/src/bob/io/image.py b/src/bob/io/image.py
index 1b76ecada9479a845c3f2797bc2fa7d79224e1ab..9eeecc3c81a812de7a665ee7fa11587cf95b8ee7 100644
--- a/src/bob/io/image.py
+++ b/src/bob/io/image.py
@@ -57,8 +57,8 @@ def bob_to_pillow(img):
 
     Returns
     -------
-    PIL.Image.Image
-        An object of pillow.Image.
+    pillow.Image.Image
+        An Image object of pillow.
     """
     # first convert to matplotlib format
     img = to_matplotlib(img)
@@ -78,7 +78,7 @@ def pillow_to_bob(img):
 
     Parameters
     ----------
-    img: PIL.Image.Image
+    img: pillow.Image.Image
         A Pillow Image
 
     Returns