diff --git a/runtime/queries/rust/highlights.scm b/runtime/queries/rust/highlights.scm
index 4b0c018e..5897991e 100644
--- a/runtime/queries/rust/highlights.scm
+++ b/runtime/queries/rust/highlights.scm
@@ -57,6 +57,7 @@
   "::"
   "."
   ";"
+  ","
 ] @punctuation.delimiter
 
 [
@@ -95,8 +96,6 @@
   value: (identifier)? @variable
   field: (field_identifier) @variable.other.member))
 
-(arguments
-  (identifier) @variable.parameter)
 (parameter
 	pattern: (identifier) @variable.parameter)
 (closure_parameters
@@ -141,7 +140,6 @@
   "mod"
   "extern"
 
-  "fn"
   "struct"
   "enum"
   "impl"
@@ -160,6 +158,8 @@
   "async"
 ] @keyword
 
+"fn" @keyword.function
+
 (mutable_specifier) @keyword.storage.modifier.mut
 
 (reference_type "&" @keyword.storage.modifier.ref)