diff --git a/web/api/v1/ast_to_json.go b/web/api/v1/translate_ast.go
similarity index 96%
rename from web/api/v1/ast_to_json.go
rename to web/api/v1/translate_ast.go
index c5f0d08dc..afa11f16b 100644
--- a/web/api/v1/ast_to_json.go
+++ b/web/api/v1/translate_ast.go
@@ -20,8 +20,10 @@ import (
 	"github.com/prometheus/prometheus/promql/parser"
 )
 
-// Take a Go PromQL AST and translate it to a JSON object for the tree view in the UI.
-// TODO: Could it make sense to do this via the normal JSON marshalling methods?
+// Take a Go PromQL AST and translate it to an object that's nicely JSON-serializable
+// for the tree view in the UI.
+// TODO: Could it make sense to do this via the normal JSON marshalling methods? Maybe
+// too UI-specific though.
 func translateAST(node parser.Expr) interface{} {
 	if node == nil {
 		return nil