diff --git a/sphinx/writers/manpage.py b/sphinx/writers/manpage.py
index 89d303a67ed..7174d1f9603 100644
--- a/sphinx/writers/manpage.py
+++ b/sphinx/writers/manpage.py
@@ -191,6 +191,12 @@ def visit_desc_parameterlist(self, node: Element) -> None:
     def depart_desc_parameterlist(self, node: Element) -> None:
         self.body.append(')')
 
+    def visit_desc_parameter_line(self, node: Element) -> None:
+        self.visit_definition(node)
+
+    def depart_desc_parameter_line(self, node: Element) -> None:
+        self.depart_definition(node)
+
     def visit_desc_parameter(self, node: Element) -> None:
         if not self.first_param:
             self.body.append(', ')
diff --git a/sphinx/writers/texinfo.py b/sphinx/writers/texinfo.py
index 1d72e4130c3..78d3d688af7 100644
--- a/sphinx/writers/texinfo.py
+++ b/sphinx/writers/texinfo.py
@@ -1469,6 +1469,12 @@ def visit_desc_parameterlist(self, node: Element) -> None:
     def depart_desc_parameterlist(self, node: Element) -> None:
         self.body.append(')')
 
+    def visit_desc_parameter_line(self, node: Element) -> None:
+        pass
+
+    def depart_desc_parameter_line(self, node: Element) -> None:
+        pass
+
     def visit_desc_parameter(self, node: Element) -> None:
         if not self.first_param:
             self.body.append(', ')