diff --git a/src/ast.rs b/src/ast.rs
index 79aeb6f..39354de 100644
--- a/src/ast.rs
+++ b/src/ast.rs
@@ -19,7 +19,7 @@ pub enum Location {
 		name: Ident,
 	},
 	Field {
-		table: Box<Location>,
+		table: Box<Expression>,
 		index: Box<Expression>,
 	},
 }
diff --git a/src/run.rs b/src/run.rs
index 9632f93..5707c67 100644
--- a/src/run.rs
+++ b/src/run.rs
@@ -183,7 +183,9 @@ mod tests {
 	fn test_fields() {
 		let mut scope = Scope::default();
 		let loc = ast::Location::Field {
-			table: Box::new(ast::Location::Variable { name: "foo".into() }),
+			table: Box::new(ast::Expression::Variable(ast::Location::Variable {
+				name: "foo".into(),
+			})),
 			index: Box::new(ast::Expression::Constant(ast::Constant::String(
 				"bar".into(),
 			))),
@@ -249,7 +251,9 @@ mod tests {
 		assert_eq!(bar.get("bar".into()), None);
 		ast::Statement::Assign {
 			target: ast::Location::Field {
-				table: Box::new(ast::Location::Variable { name: "foo".into() }),
+				table: Box::new(ast::Expression::Variable(ast::Location::Variable {
+					name: "foo".into(),
+				})),
 				index: Box::new(ast::Expression::Constant(ast::Constant::String(
 					"bar".into(),
 				))),
diff --git a/src/twopass.rs b/src/twopass.rs
index 2b29286..27b9200 100644
--- a/src/twopass.rs
+++ b/src/twopass.rs
@@ -37,7 +37,7 @@ enum Location {
 		id: Ident,
 	},
 	Field {
-		table: Box<Location>,
+		table: Box<Expression>,
 		index: Box<Expression>,
 	},
 }
@@ -156,12 +156,12 @@ fn lookup(scope: &BuildContext<'_>, loc: &ast::Location) -> Location {
 				.request(&"_ENV".into())
 				.expect("_ENV must be always available");
 			Location::Field {
-				table: Box::new(Location::Variable { id: env }),
+				table: Box::new(Expression::Variable(Location::Variable { id: env })),
 				index: Box::new(Expression::Constant(ast::Constant::String(name.clone()))),
 			}
 		}
 		ast::Location::Field { table, index } => {
-			let table = Box::new(lookup(scope, &table));
+			let table = Box::new(build_expression(scope, &table));
 			let index = Box::new(build_expression(scope, &index));
 			Location::Field { table, index }
 		}