diff --git a/syntax/eo.vim b/syntax/eo.vim
index 5de2a01..8546930 100644
--- a/syntax/eo.vim
+++ b/syntax/eo.vim
@@ -63,7 +63,7 @@ syn match	eoOctalError	display contained "0\o*[89]\d*"
 syn case match
 
 " Events region
-syn region eoEventsRegion start="\<events\_s*{" end="}" transparent
+syn region eoEventsRegion start="events\s*{" end="}" transparent
 syn match eoEvents "^\s*\w\+\(;\|:\|\s\)" contained containedin=eoEventsRegion contains=eoEvent
 syn match eoEvent "\w\+" contained