diff --git a/samples/Inform 7/Trivial Extension.i7x b/samples/Inform 7/Trivial Extension.i7x
index 8b7e14cd..df0412c3 100644
--- a/samples/Inform 7/Trivial Extension.i7x	
+++ b/samples/Inform 7/Trivial Extension.i7x	
@@ -45,7 +45,7 @@ To say /em -- running on:
 
 Include (-
 
-! Inform 6 comments start with ! marks and run to the end of the line.
+! Inform 6 comments start with a ! mark and run to the end of the line.
 Global cowcount;
 
 [ inform6func arg;