diff --git a/src/test/java/org/springframework/samples/petclinic/owner/PetValidatorTests.java b/src/test/java/org/springframework/samples/petclinic/owner/PetValidatorTests.java
index 1a153bcbc..04735674e 100644
--- a/src/test/java/org/springframework/samples/petclinic/owner/PetValidatorTests.java
+++ b/src/test/java/org/springframework/samples/petclinic/owner/PetValidatorTests.java
@@ -48,11 +48,11 @@ public class PetValidatorTests {
 
 	private Errors errors;
 
-	private static final String petName = "Buddy";
+	private static final String PET_NAME = "Buddy";
 
-	private static final String petTypeName = "Dog";
+	private static final String PET_TYPE_NAME = "Dog";
 
-	private static final LocalDate petBirthDate = LocalDate.of(1990, 1, 1);
+	private static final LocalDate PET_BIRTH_DATE = LocalDate.of(1990, 1, 1);
 
 	@BeforeEach
 	void setUp() {
@@ -64,10 +64,10 @@ public class PetValidatorTests {
 
 	@Test
 	void testValidate() {
-		petType.setName(petTypeName);
-		pet.setName(petName);
+		petType.setName(PET_TYPE_NAME);
+		pet.setName(PET_NAME);
 		pet.setType(petType);
-		pet.setBirthDate(petBirthDate);
+		pet.setBirthDate(PET_BIRTH_DATE);
 
 		petValidator.validate(pet, errors);
 
@@ -79,10 +79,10 @@ public class PetValidatorTests {
 
 		@Test
 		void testValidateWithInvalidPetName() {
-			petType.setName(petTypeName);
+			petType.setName(PET_TYPE_NAME);
 			pet.setName("");
 			pet.setType(petType);
-			pet.setBirthDate(petBirthDate);
+			pet.setBirthDate(PET_BIRTH_DATE);
 
 			petValidator.validate(pet, errors);
 
@@ -91,9 +91,9 @@ public class PetValidatorTests {
 
 		@Test
 		void testValidateWithInvalidPetType() {
-			pet.setName(petName);
+			pet.setName(PET_NAME);
 			pet.setType(null);
-			pet.setBirthDate(petBirthDate);
+			pet.setBirthDate(PET_BIRTH_DATE);
 
 			petValidator.validate(pet, errors);
 
@@ -102,8 +102,8 @@ public class PetValidatorTests {
 
 		@Test
 		void testValidateWithInvalidBirthDate() {
-			petType.setName(petTypeName);
-			pet.setName(petName);
+			petType.setName(PET_TYPE_NAME);
+			pet.setName(PET_NAME);
 			pet.setType(petType);
 			pet.setBirthDate(null);
 
@@ -114,4 +114,4 @@ public class PetValidatorTests {
 
 	}
 
-}
+}
\ No newline at end of file