diff --git a/src/ApprovalTests.NUnit3/NUnitReporterTest.cs b/src/ApprovalTests.NUnit3/NUnitReporterTest.cs
index e0a2dc4a..98cebdc6 100644
--- a/src/ApprovalTests.NUnit3/NUnitReporterTest.cs
+++ b/src/ApprovalTests.NUnit3/NUnitReporterTest.cs
@@ -1,3 +1,5 @@
+using NUnit.Framework.Legacy;
+
 [TestFixture]
 public class NUnitReporterTest
 {
@@ -5,7 +7,7 @@ public class NUnitReporterTest
     public void TestNunitIsWorking()
     {
         Approvals.SetCaller();
-        Assert.IsTrue(NUnit3Reporter.INSTANCE.IsWorkingInThisEnvironment("default.txt"));
+        ClassicAssert.IsTrue(NUnit3Reporter.INSTANCE.IsWorkingInThisEnvironment("default.txt"));
     }
 
     [Test]
@@ -22,7 +24,7 @@ public void TestReporter()
         catch (AssertionException exception)
         {
             var expected = string.Format("  String lengths are both 5. Strings differ at index 0.{0}  Expected: \"World\"{0}  But was:  \"Hello\"{0}  -----------^{0}", Environment.NewLine);
-            Assert.AreEqual(
+            ClassicAssert.AreEqual(
                 expected,
                 exception.Message);
         }
diff --git a/src/ApprovalTests/Combinations/CombinationApprovals.cs b/src/ApprovalTests/Combinations/CombinationApprovals.cs
index 533de93a..d59d5d4f 100644
--- a/src/ApprovalTests/Combinations/CombinationApprovals.cs
+++ b/src/ApprovalTests/Combinations/CombinationApprovals.cs
@@ -178,8 +178,7 @@ public static string GetApprovalString<A, B, C, D, E, F, G, H, I>(Func<A, B, C,
             sb.Append($"{input} => {resultFormatter(result)}\n");
         }, aList, bList, cList, dList, eList, fList, gList, hList, iList);
 
-        var combinations = sb.ToString();
-        return combinations;
+        return sb.ToString();
     }
 
     static void AllCombinations<A, B, C, D, E, F, G, H, I>(Action<A, B, C, D, E, F, G, H, I> processCall, IEnumerable<A> aList, IEnumerable<B> bList, IEnumerable<C> cList, IEnumerable<D> dList, IEnumerable<E> eList, IEnumerable<F> fList, IEnumerable<G> gList, IEnumerable<H> hList, IEnumerable<I> iList)