diff --git a/queries/highlights.scm b/queries/highlights.scm
index a95f6cb03..20f809fe1 100644
--- a/queries/highlights.scm
+++ b/queries/highlights.scm
@@ -72,8 +72,8 @@
 ; Reserved identifiers
 ; TODO: when tree-sitter supports `#any-of?` in the Rust bindings,
 ; refactor this to use `#any-of?` rather than `#match?`
-((identifier) @warning
- (#match? @warning "^(auto|delegate|derive|else|implement|macro|test|echo)$"))
+((identifier) @error
+ (#match? @error "^(auto|delegate|derive|else|implement|macro|test|echo)$"))
 
 ; Variables
 (identifier) @variable
diff --git a/test/highlight/reserved.gleam b/test/highlight/reserved.gleam
index 5940719b2..f7029944e 100644
--- a/test/highlight/reserved.gleam
+++ b/test/highlight/reserved.gleam
@@ -1,16 +1,16 @@
 auto
-// <- warning
+// <- error
 delegate
-// <- warning
+// <- error
 derive
-// <- warning
+// <- error
 else
-// <- warning
+// <- error
 implement
-// <- warning
+// <- error
 macro
-// <- warning
+// <- error
 test
-// <- warning
+// <- error
 echo
-// <- warning
+// <- error