diff --git a/app/AbstractSyntaxTree.hs b/app/AbstractSyntaxTree.hs
index 009ccdc..648636c 100644
--- a/app/AbstractSyntaxTree.hs
+++ b/app/AbstractSyntaxTree.hs
@@ -33,4 +33,5 @@ simplifyFactor :: Parser.Factor -> Node
 simplifyFactor factor = case factor of
     Parser.Integer i -> Scalar i
     Parser.Parantheses expr -> simplifyExpr expr
+    Parser.NegFactor (Parser.Integer i) -> Scalar (-i)  -- Shortcut to avoid storing -x as -1 * x
     Parser.NegFactor  factor2 -> Operation Mult (Scalar (-1)) (simplifyFactor factor2)