1 files changed, 3 insertions, 2 deletions
diff --git a/packages/sol-cov/src/ast_visitor.ts b/packages/sol-cov/src/ast_visitor.ts
index 16984b5ec..564f0f7d2 100644
--- a/packages/sol-cov/src/ast_visitor.ts
+++ b/packages/sol-cov/src/ast_visitor.ts
@@ -116,8 +116,9 @@ export class ASTVisitor {
         this._statementMap[this._entryId++] = this._getExpressionRange(ast);
     }
     private _getExpressionRange(ast: Parser.ASTNode): SingleFileSourceRange {
-        const start = this._locationByOffset[ast.range[0]];
-        const end = this._locationByOffset[ast.range[1] + 1];
+        const astRange = ast.range as [number, number];
+        const start = this._locationByOffset[astRange[0]];
+        const end = this._locationByOffset[astRange[1] + 1];
         const range = {
             start,
             end,