diff --git a/Install.md b/Install.md
index e20d2aa..a31aace 100644
--- a/Install.md
+++ b/Install.md
@@ -55,7 +55,7 @@ FreeSql supports basic CURD. In addition, it also supports creating models based
 - [《Introduction to Codefirst Mode》](CodeFirst-Mode)
     - [《CodeFirst Mode, Part 1: Entity Attributes》](Entity-Attributes)
     - [《CodeFirst Mode, Part 2: FluentApi》](FluentApi-Mode)
-    - [《CodeFirst Mode  Part 3: Custom Attributes》](Custom-Attributes)
+    - [《CodeFirst Mode, Part 3: Custom Attributes》](Custom-Attributes)
     - [《CodeFirst Mode, Part 4: Type Mapping》](Type-Mapping)
     - [《CodeFirst Mode, Part 5: Migration Structure》](Migration-Structure)
 - [《Introduction to DbFirst Mode》](DbFirst-Mode)