diff --git a/doc/en/conf.py b/doc/en/conf.py
index 3e87003c5..a5a09fa29 100644
--- a/doc/en/conf.py
+++ b/doc/en/conf.py
@@ -190,6 +190,7 @@ nitpick_ignore = [
     ("py:class", "TerminalReporter"),
     ("py:class", "_pytest._code.code.TerminalRepr"),
     ("py:class", "_pytest.fixtures.FixtureFunctionMarker"),
+    ("py:class", "_pytest.fixtures.FixtureFunctionDefinition"),
     ("py:class", "_pytest.logging.LogCaptureHandler"),
     ("py:class", "_pytest.mark.structures.ParameterSet"),
     # Intentionally undocumented/private