diff --git a/src/parser/ast/mod.rs b/src/parser/ast/mod.rs
index 8039071..0119683 100644
--- a/src/parser/ast/mod.rs
+++ b/src/parser/ast/mod.rs
@@ -496,10 +496,6 @@ pub enum Expression {
     YieldFrom {
         value: Box<Self>,
     },
-    Negate {
-        span: Span,
-        value: Box<Self>,
-    },
     UnaryPlus {
         span: Span,
         value: Box<Self>,
diff --git a/src/parser/expressions.rs b/src/parser/expressions.rs
index 39b5262..127c66a 100644
--- a/src/parser/expressions.rs
+++ b/src/parser/expressions.rs
@@ -1417,10 +1417,7 @@ fn interpolated_string_part(state: &mut State) -> ParseResult<Option<StringPart>
                             let span = state.current.span;
                             state.next();
                             if let TokenKind::LiteralInteger(i) = &state.current.kind {
-                                let e = Expression::Negate {
-                                    span,
-                                    value: Box::new(Expression::LiteralInteger { i: i.clone() }),
-                                };
+                                let e = Expression::ArithmeticOperation(ArithmeticOperation::Negation { span, right: Box::new(Expression::LiteralInteger { i: i.clone() }) });
                                 state.next();
                                 e
                             } else {