diff --git a/rc/filetype/php.kak b/rc/filetype/php.kak
index 62ba6dddf..98da9e028 100644
--- a/rc/filetype/php.kak
+++ b/rc/filetype/php.kak
@@ -39,7 +39,7 @@ add-highlighter shared/php/doc_comment2  region /\*\*  \*/             ref php/d
 add-highlighter shared/php/comment1      region //     '$'             fill comment
 add-highlighter shared/php/comment2      region /\*    \*/             fill comment
 add-highlighter shared/php/comment3      region '#'    '$'             fill comment
-add-highlighter shared/php/heredoc       region -match-capture '<<<(.*?)$' '^\h*(.*?);' fill string
+add-highlighter shared/php/heredoc       region -match-capture '<<<''?(.*?)''?$' '^\h*(.*?);?$' fill string
 
 
 add-highlighter shared/php/code/ regex &?\$\w* 0:variable