diff --git a/doc-src/API.rst b/doc-src/API.rst
index 34c2e9e..98f1128 100644
--- a/doc-src/API.rst
+++ b/doc-src/API.rst
@@ -63,6 +63,7 @@ To get access to all plot functions in isolation, they can also be imported sepa
 .. autofunction:: drawaxes
 .. autofunction:: plotRd
 .. autofunction:: plotHistogram
+.. autofunction:: plotppScatter
 .. autofunction:: plotPMF
 .. autofunction:: plotThres
 .. autofunction:: plotGeweke