diff --git a/docs/src/references/api/python/systems.rst b/docs/src/references/api/python/systems.rst
index 458dcf7ec..0cef84ded 100644
--- a/docs/src/references/api/python/systems.rst
+++ b/docs/src/references/api/python/systems.rst
@@ -1,5 +1,5 @@
-Available system implementation
-===============================
+Available system implementations
+================================
 
 .. autoclass:: featomic.IntoSystem