diff --git a/Sources/BinaryParsing/Documentation.docc/Articles/OptionalOperations.md b/Sources/BinaryParsing/Documentation.docc/Articles/OptionalOperations.md
index 59b703f..84e9eff 100644
--- a/Sources/BinaryParsing/Documentation.docc/Articles/OptionalOperations.md
+++ b/Sources/BinaryParsing/Documentation.docc/Articles/OptionalOperations.md
@@ -44,7 +44,7 @@ guard let range = start ..<? (start +? count) else {
 
 ### Collection subscripting
 
-- ``Swift/Collection/subscript(ifInBounds:)-(Index)``
+- ``Swift/Collection/subscript(ifInBounds:)-(Self.Index)``
 - ``Swift/Collection/subscript(ifInBounds:)-(FixedWidthInteger)``
-- ``Swift/Collection/subscript(ifInBounds:)-(Range<Index>)``
+- ``Swift/Collection/subscript(ifInBounds:)-(Range<Self.Index>)``
 - ``Swift/Collection/subscript(ifInBounds:)-(Range<FixedWidthInteger>)``