diff --git a/syntaxes/scheme.tmLanguage.yaml b/syntaxes/scheme.tmLanguage.yaml
index 61f8a23..32bb30b 100644
--- a/syntaxes/scheme.tmLanguage.yaml
+++ b/syntaxes/scheme.tmLanguage.yaml
@@ -202,7 +202,7 @@ repository:
             name: punctuation.definition.function.scheme
           "3":
             name: entity.name.function.scheme
-          "4":
+          "6":
             name: variable.parameter.function.scheme
           "7":
             name: punctuation.definition.function.scheme