diff --git a/stdlib/2/markupbase.pyi b/stdlib/2/markupbase.pyi
index 129b49b90..358ba16c3 100644
--- a/stdlib/2/markupbase.pyi
+++ b/stdlib/2/markupbase.pyi
@@ -6,4 +6,4 @@ class ParserBase(object):
     def reset(self) -> None: ...
     def getpos(self) -> Tuple[int, int]: ...
 
-    def unkown_decl(self, data: str) -> None: ...
+    def unknown_decl(self, data: str) -> None: ...
diff --git a/stdlib/3/_markupbase.pyi b/stdlib/3/_markupbase.pyi
index 58d107052..09f69c742 100644
--- a/stdlib/3/_markupbase.pyi
+++ b/stdlib/3/_markupbase.pyi
@@ -6,4 +6,4 @@ class ParserBase:
     def reset(self) -> None: ...
     def getpos(self) -> Tuple[int, int]: ...
 
-    def unkown_decl(self, data: str) -> None: ...
+    def unknown_decl(self, data: str) -> None: ...