diff --git a/Envelope_3/include/CGAL/Envelope_3/Envelope_base.h b/Envelope_3/include/CGAL/Envelope_3/Envelope_base.h
index cd14cc94638..8575bbfa5aa 100644
--- a/Envelope_3/include/CGAL/Envelope_3/Envelope_base.h
+++ b/Envelope_3/include/CGAL/Envelope_3/Envelope_base.h
@@ -26,7 +26,7 @@ CGAL_BEGIN_NAMESPACE
 // Envelope types:
 enum Envelope_type {
   ENVELOPE_LOWER = 1,
-  ENVELOPE_UPPER = 2,
+  ENVELOPE_UPPER = 2
 };
 
 // Types of intersection curve between 2 xy-monotone surfaces: