diff --git a/include/mapidefs.h b/include/mapidefs.h
index be72a958194..84e0f2d7447 100644
--- a/include/mapidefs.h
+++ b/include/mapidefs.h
@@ -182,7 +182,7 @@ typedef struct _MAPIUID
 #define cchProfilePassMax 64 /* Maximum length of a profile password */
 #endif
 
-/* Properties: The are the contents of cells in MAPI tables, as well as the
+/* Properties: These are the contents of cells in MAPI tables, as well as the
  * values returned when object properties are queried.
  */