diff --git a/website/playground/symbols.ts b/website/playground/symbols.ts
index d65f7931f..6d49c51fd 100644
--- a/website/playground/symbols.ts
+++ b/website/playground/symbols.ts
@@ -37,7 +37,8 @@ export const renderSymbols = (symbols: SymbolTable): string => {
         span: symbols.spans[index],
         references: symbols.resolvedReferences[index].map(id => ({
           referenceId: id,
-          ...symbols.references[id],
+          // reference id is 1-based
+          ...symbols.references[id - 1],
         })),
       })
       return acc