diff --git a/contrib/pyopencl.vim b/contrib/pyopencl.vim
index e3e5fa9f55dedec38245972683da4a525af4f70a..d3dc8cb41e864b8f13e849a0e773d875bd7a230e 100644
--- a/contrib/pyopencl.vim
+++ b/contrib/pyopencl.vim
@@ -77,6 +77,8 @@ syn region pythonCLRawString
 " hi link pythonCLString String
 " hi link pythonCLRawString String
 
+syntax sync fromstart
+
 let b:current_syntax = "pyopencl"
 
 " vim: foldmethod=marker