diff --git a/src/encoding/json/decode.go b/src/encoding/json/decode.go
index efceecdf82..f8205704e3 100644
--- a/src/encoding/json/decode.go
+++ b/src/encoding/json/decode.go
@@ -73,8 +73,7 @@ import (
 // use. If the map is nil, Unmarshal allocates a new map. Otherwise Unmarshal
 // reuses the existing map, keeping existing entries. Unmarshal then stores
 // key-value pairs from the JSON object into the map. The map's key type must
-// either be any string type, an integer, implement [json.Unmarshaler], or
-// implement [encoding.TextUnmarshaler].
+// either be any string type, an integer, or implement [encoding.TextUnmarshaler].
 //
 // If the JSON-encoded data contain a syntax error, Unmarshal returns a [SyntaxError].
 //
diff --git a/src/encoding/json/encode.go b/src/encoding/json/encode.go
index cb28feb279..7bee1a6805 100644
--- a/src/encoding/json/encode.go
+++ b/src/encoding/json/encode.go
@@ -141,7 +141,7 @@ import (
 // are sorted and used as JSON object keys by applying the following rules,
 // subject to the UTF-8 coercion described for string values above:
 //   - keys of any string type are used directly
-//   - [encoding.TextMarshalers] are marshaled
+//   - keys that implement [encoding.TextMarshaler] are marshaled
 //   - integer keys are converted to strings
 //
 // Pointer values encode as the value pointed to.