diff --git a/src/tools/msvc.py b/src/tools/msvc.py
index de184dbd3..baa57e831 100644
--- a/src/tools/msvc.py
+++ b/src/tools/msvc.py
@@ -1039,7 +1039,7 @@ def register_toolset_really():
     feature.extend('toolset', ['msvc'])
 
     # Intel and msvc supposedly have link-compatible objects.
-    feature.subfeature( 'toolset', 'msvc', 'vendor', 'intel', ['propagated', 'optional'])
+    feature.subfeature( 'toolset', 'msvc', 'vendor', ['intel'], ['propagated', 'optional'])
 
     # Inherit MIDL flags.
     toolset.inherit_flags('msvc', 'midl')