diff --git a/packages/@vuepress/theme-default/styles/code.styl b/packages/@vuepress/theme-default/styles/code.styl
index edf30f235b..0a9ef28ac5 100644
--- a/packages/@vuepress/theme-default/styles/code.styl
+++ b/packages/@vuepress/theme-default/styles/code.styl
@@ -125,3 +125,6 @@ div[class~="language-python"]:before
 
 div[class~="language-bash"]:before
   content "sh"
+  
+div[class~="language-php"]:before
+  content "php"