diff --git a/src/test/java/IntegralCalculatorTests.java b/src/test/java/IntegralCalculatorTests.java
index 16f268a..478e241 100644
--- a/src/test/java/IntegralCalculatorTests.java
+++ b/src/test/java/IntegralCalculatorTests.java
@@ -10,7 +10,7 @@ class IntegralCalculatorTests {
     private static void assertIntegral(final double expected, final IntegralCalculator calculator, final Function<Double, Double> function, final double lowerBound, final double upperBound) {
         var value = calculator.calculate(function, lowerBound, upperBound);
 
-        assertEquals(value, expected, calculator.getAccuracy());
+        assertEquals(expected, value, calculator.getAccuracy());
     }
 
     @Test