diff --git a/src/Math-Tests-Polynomials/PMPolynomialTest.class.st b/src/Math-Tests-Polynomials/PMPolynomialTest.class.st
index c74a080d..c66a9db6 100644
--- a/src/Math-Tests-Polynomials/PMPolynomialTest.class.st
+++ b/src/Math-Tests-Polynomials/PMPolynomialTest.class.st
@@ -161,11 +161,11 @@ PMPolynomialTest >> testPolynomialMultiplicationIsCommutative [
 
 { #category : #'testing - addition' }
 PMPolynomialTest >> testPolynomialNumberAddition [
-	| polynomial |
-	polynomial := 2 + (PMPolynomial coefficients: #(2 -3 1)).
-	self assert: (polynomial at: 0) equals: 4.
-	self assert: (polynomial at: 1) equals: -3.
-	self assert: (polynomial at: 2) equals: 1.
+
+	| polynomial expected |
+	polynomial := 2 + (PMPolynomial coefficients: #( 2 -3 1 )).
+	expected := PMPolynomial coefficients: #( 4 -3 1 ).
+	self assert: polynomial equals: expected.
 	self assert: (polynomial at: 3) equals: 0
 ]