diff --git a/Contributing-Guide.md b/Contributing-Guide.md
index e726ffe..2664d89 100644
--- a/Contributing-Guide.md
+++ b/Contributing-Guide.md
@@ -875,7 +875,7 @@ yappi.stop()
 yappi.get_func_stats().print_all()
 ```
 
-####Performance Targets
+#### Performance Targets
 
 | Metric | Target | Measurement |
 |--------|--------|-------------|