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-rw-r--r--src/doc/rustc-dev-guide/src/kinds.md2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/doc/rustc-dev-guide/src/kinds.md b/src/doc/rustc-dev-guide/src/kinds.md
index d5e218c3194..ac6a2d35b57 100644
--- a/src/doc/rustc-dev-guide/src/kinds.md
+++ b/src/doc/rustc-dev-guide/src/kinds.md
@@ -21,7 +21,7 @@ constructing such substitution slices.
 
 ## `Kind`
 The actual `Kind` struct is optimised for space, storing the type, lifetime or
-const as an interned pointer containing a mask identifying its kind (in the
+const as an interned pointer containing a tag identifying its kind (in the
 lowest 2 bits). Unless you are working with the `Subst` implementation
 specifically, you should generally not have to deal with `Kind` and instead
 make use of the safe [`UnpackedKind`](#unpackedkind) abstraction.