diff --git a/_config.yml b/_config.yml
index 60d74e9b..7a67cdb8 100644
--- a/_config.yml
+++ b/_config.yml
@@ -47,7 +47,7 @@ future: true
 highlight:
   enable: true
   line_number: true
-  auto_detect: true
+  auto_detect: false
   tab_replace:
 
 # Home page setting