diff --git a/testing-modules/testing/src/test/java/com/baeldung/testing/assertj/custom/AssertJCustomAssertionsUnitTest.java b/testing-modules/testing/src/test/java/com/baeldung/testing/assertj/custom/AssertJCustomAssertionsUnitTest.java
index f9b5bad039..4c09311bac 100644
--- a/testing-modules/testing/src/test/java/com/baeldung/testing/assertj/custom/AssertJCustomAssertionsUnitTest.java
+++ b/testing-modules/testing/src/test/java/com/baeldung/testing/assertj/custom/AssertJCustomAssertionsUnitTest.java
@@ -25,7 +25,7 @@ public class AssertJCustomAssertionsUnitTest {
             assertThat(person).isAdult();
             fail();
         } catch (AssertionError e) {
-            org.assertj.core.api.Assertions.assertThat(e).hasMessage("Expected adult but was juvenile");
+            org.assertj.core.api.Assertions.assertThat(e).hasMessage("Expected person to be adult");
         }
     }
 
@@ -38,7 +38,7 @@ public class AssertJCustomAssertionsUnitTest {
             assertThat(person).hasNickname("John");
             fail();
         } catch (AssertionError e) {
-            org.assertj.core.api.Assertions.assertThat(e).hasMessage("Expected nickname John but did not have");
+            org.assertj.core.api.Assertions.assertThat(e).hasMessage("Expected person to have nickname John");
         }
     }
 }
diff --git a/testing-modules/testing/src/test/java/com/baeldung/testing/assertj/custom/PersonAssert.java b/testing-modules/testing/src/test/java/com/baeldung/testing/assertj/custom/PersonAssert.java
index 4c071660f3..d6cc585e96 100644
--- a/testing-modules/testing/src/test/java/com/baeldung/testing/assertj/custom/PersonAssert.java
+++ b/testing-modules/testing/src/test/java/com/baeldung/testing/assertj/custom/PersonAssert.java
@@ -15,7 +15,7 @@ public class PersonAssert extends AbstractAssert<PersonAssert, Person> {
     public PersonAssert hasFullName(String fullName) {
         isNotNull();
         if (!actual.getFullName().equals(fullName)) {
-            failWithMessage("Expected full name %s but was %s", fullName, actual.getFullName());
+            failWithMessage("Expected person to have full name %s but was %s", fullName, actual.getFullName());
         }
         return this;
     }
@@ -23,7 +23,7 @@ public class PersonAssert extends AbstractAssert<PersonAssert, Person> {
     public PersonAssert isAdult() {
         isNotNull();
         if (actual.getAge() < 18) {
-            failWithMessage("Expected adult but was juvenile");
+            failWithMessage("Expected person to be adult");
         }
         return this;
     }
@@ -31,7 +31,7 @@ public class PersonAssert extends AbstractAssert<PersonAssert, Person> {
     public PersonAssert hasNickname(String nickName) {
         isNotNull();
         if (!actual.getNicknames().contains(nickName)) {
-            failWithMessage("Expected nickname %s but did not have", nickName);
+            failWithMessage("Expected person to have nickname %s", nickName);
         }
         return this;
     }