diff --git a/test/testutil/TestUtilities.java b/test/testutil/TestUtilities.java
index 94e6c2a..fd833d6 100644
--- a/test/testutil/TestUtilities.java
+++ b/test/testutil/TestUtilities.java
@@ -84,12 +84,12 @@ public final class TestUtilities {
         return new Cons(expressionList[0], rest);
     }
 
-    public static void assertSExpressionsMatch(SExpression one, SExpression two) {
-        assertThat(one.toString(), is(two.toString()));
+    public static void assertSExpressionsMatch(SExpression expected, SExpression actual) {
+        assertThat(actual.toString(), is(expected.toString()));
     }
 
-    public static void assertSExpressionsDoNotMatch(SExpression one, SExpression two) {
-        assertThat(one.toString(), not(two.toString()));
+    public static void assertSExpressionsDoNotMatch(SExpression unexpected, SExpression actual) {
+        assertThat(actual.toString(), not(unexpected.toString()));
     }
 
     public static void assertIsErrorWithMessage(LispException e) {