diff --git a/spring-boot-project/spring-boot-test/src/main/java/org/springframework/boot/test/mock/mockito/MockitoPostProcessor.java b/spring-boot-project/spring-boot-test/src/main/java/org/springframework/boot/test/mock/mockito/MockitoPostProcessor.java
index f5d0e0ee3e9..ec66aa12ffa 100644
--- a/spring-boot-project/spring-boot-test/src/main/java/org/springframework/boot/test/mock/mockito/MockitoPostProcessor.java
+++ b/spring-boot-project/spring-boot-test/src/main/java/org/springframework/boot/test/mock/mockito/MockitoPostProcessor.java
@@ -248,18 +248,22 @@ public class MockitoPostProcessor implements InstantiationAwareBeanPostProcessor
 		return candidates;
 	}
 
-	private Set<String> getExistingBeans(ConfigurableListableBeanFactory beanFactory, ResolvableType type) {
-		Set<String> beans = new LinkedHashSet<>(Arrays.asList(beanFactory.getBeanNamesForType(type, true, false)));
-		String typeName = type.resolve(Object.class).getName();
+	private Set<String> getExistingBeans(ConfigurableListableBeanFactory beanFactory, ResolvableType resolvableType) {
+		Set<String> beans = new LinkedHashSet<>(
+				Arrays.asList(beanFactory.getBeanNamesForType(resolvableType, true, false)));
+		Class<?> type = resolvableType.resolve(Object.class);
+		String typeName = type.getName();
 		for (String beanName : beanFactory.getBeanNamesForType(FactoryBean.class, true, false)) {
 			beanName = BeanFactoryUtils.transformedBeanName(beanName);
 			BeanDefinition beanDefinition = beanFactory.getBeanDefinition(beanName);
-			if (typeName.equals(beanDefinition.getAttribute(FactoryBean.OBJECT_TYPE_ATTRIBUTE))) {
+			Object attribute = beanDefinition.getAttribute(FactoryBean.OBJECT_TYPE_ATTRIBUTE);
+			if (resolvableType.equals(attribute) || type.equals(attribute) || typeName.equals(attribute)) {
 				beans.add(beanName);
 			}
 		}
 		beans.removeIf(this::isScopedTarget);
 		return beans;
+
 	}
 
 	private boolean isScopedTarget(String beanName) {
diff --git a/spring-boot-project/spring-boot-test/src/test/java/org/springframework/boot/test/mock/mockito/MockitoPostProcessorTests.java b/spring-boot-project/spring-boot-test/src/test/java/org/springframework/boot/test/mock/mockito/MockitoPostProcessorTests.java
index 4e6a0660636..99969dadd9c 100644
--- a/spring-boot-project/spring-boot-test/src/test/java/org/springframework/boot/test/mock/mockito/MockitoPostProcessorTests.java
+++ b/spring-boot-project/spring-boot-test/src/test/java/org/springframework/boot/test/mock/mockito/MockitoPostProcessorTests.java
@@ -36,6 +36,7 @@ import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.Primary;
 import org.springframework.core.Ordered;
+import org.springframework.core.ResolvableType;
 import org.springframework.test.util.ReflectionTestUtils;
 import org.springframework.util.Assert;
 
@@ -73,7 +74,7 @@ class MockitoPostProcessorTests {
 	}
 
 	@Test
-	void canMockBeanProducedByFactoryBeanWithObjectTypeAttribute() {
+	void canMockBeanProducedByFactoryBeanWithStringObjectTypeAttribute() {
 		AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();
 		MockitoPostProcessor.register(context);
 		RootBeanDefinition factoryBeanDefinition = new RootBeanDefinition(TestFactoryBean.class);
@@ -84,6 +85,31 @@ class MockitoPostProcessorTests {
 		assertThat(Mockito.mockingDetails(context.getBean("beanToBeMocked")).isMock()).isTrue();
 	}
 
+	@Test
+	void canMockBeanProducedByFactoryBeanWithClassObjectTypeAttribute() {
+		AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();
+		MockitoPostProcessor.register(context);
+		RootBeanDefinition factoryBeanDefinition = new RootBeanDefinition(TestFactoryBean.class);
+		factoryBeanDefinition.setAttribute(FactoryBean.OBJECT_TYPE_ATTRIBUTE, SomeInterface.class);
+		context.registerBeanDefinition("beanToBeMocked", factoryBeanDefinition);
+		context.register(MockedFactoryBean.class);
+		context.refresh();
+		assertThat(Mockito.mockingDetails(context.getBean("beanToBeMocked")).isMock()).isTrue();
+	}
+
+	@Test
+	void canMockBeanProducedByFactoryBeanWithResolvableTypeObjectTypeAttribute() {
+		AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();
+		MockitoPostProcessor.register(context);
+		RootBeanDefinition factoryBeanDefinition = new RootBeanDefinition(TestFactoryBean.class);
+		ResolvableType objectType = ResolvableType.forClass(SomeInterface.class);
+		factoryBeanDefinition.setAttribute(FactoryBean.OBJECT_TYPE_ATTRIBUTE, objectType);
+		context.registerBeanDefinition("beanToBeMocked", factoryBeanDefinition);
+		context.register(MockedFactoryBean.class);
+		context.refresh();
+		assertThat(Mockito.mockingDetails(context.getBean("beanToBeMocked")).isMock()).isTrue();
+	}
+
 	@Test
 	void canMockPrimaryBean() {
 		AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();