diff --git a/biolinkml/generators/markdowngen.py b/biolinkml/generators/markdowngen.py
index 934bea67..1f9723bd 100644
--- a/biolinkml/generators/markdowngen.py
+++ b/biolinkml/generators/markdowngen.py
@@ -389,7 +389,7 @@ def para(txt: str) -> None:
 
     @staticmethod
     def bullet(txt: str, level=0) -> None:
-        print(f'{"   " * level} * {txt}')
+        print(f'{"    " * level} * {txt}')
 
     def frontmatter(self, thingtype: str, layout='default') -> None:
         self.header(1, thingtype)