diff --git a/docs/src/sdk/sdk_changelog.rst b/docs/src/sdk/sdk_changelog.rst
index 881bc34..add2c08 100644
--- a/docs/src/sdk/sdk_changelog.rst
+++ b/docs/src/sdk/sdk_changelog.rst
@@ -7,7 +7,7 @@ Change Log
 
 1. Change project directory structure.
 2. Lifting dependency and improving code quality.
-3. Aupport xy demo code in sample get_depth_with_region.
+3. Support xy demo code in sample get_depth_with_region.
 4. Fix some bugs.
 
 2019-09-4(v2.4.2)