diff --git a/bob/bio/base/extractor/stacks.py b/bob/bio/base/extractor/stacks.py
index 941b28954787fa7466f0595e878561c491f5a9b6..1024a6bf45b1627d0f1119dde8b7b45c2ce1d7b2 100644
--- a/bob/bio/base/extractor/stacks.py
+++ b/bob/bio/base/extractor/stacks.py
@@ -171,7 +171,7 @@ class ParallelExtractor(ParallelProcessor, MultipleExtractor):
            [ 1.,  2.,  3.]]), array([[ 0.5,  1. ,  1.5],
            [ 0.5,  1. ,  1.5]])]
 
-    The data may be further processed using a :any:`SequentialProcessor`:
+    The data may be further processed using a :any:`SequentialExtractor`:
 
     >>> from bob.bio.base.extractor import SequentialExtractor
     >>> total_extractor = SequentialExtractor(
diff --git a/bob/bio/base/preprocessor/stacks.py b/bob/bio/base/preprocessor/stacks.py
index 3fbda2cdeec0e9c6b2f4c8639f60a9bb5172d916..a23e77b80232f9a694faabc7b1c667744b30d0b8 100644
--- a/bob/bio/base/preprocessor/stacks.py
+++ b/bob/bio/base/preprocessor/stacks.py
@@ -78,7 +78,7 @@ class ParallelPreprocessor(ParallelProcessor, Preprocessor):
            [ 1.,  2.,  3.]]), array([[ 0.5,  1. ,  1.5],
            [ 0.5,  1. ,  1.5]])]
 
-    The data may be further processed using a :any:`SequentialProcessor`:
+    The data may be further processed using a :any:`SequentialPreprocessor`:
 
     >>> from bob.bio.base.preprocessor import SequentialPreprocessor
     >>> total_preprocessor = SequentialPreprocessor(