diff --git a/spring-boot-project/spring-boot-tools/spring-boot-configuration-processor/src/test/java/org/springframework/boot/configurationprocessor/IncrementalBuildMetadataGenerationTests.java b/spring-boot-project/spring-boot-tools/spring-boot-configuration-processor/src/test/java/org/springframework/boot/configurationprocessor/IncrementalBuildMetadataGenerationTests.java
index e5333b7d69b..150e9b4813c 100644
--- a/spring-boot-project/spring-boot-tools/spring-boot-configuration-processor/src/test/java/org/springframework/boot/configurationprocessor/IncrementalBuildMetadataGenerationTests.java
+++ b/spring-boot-project/spring-boot-tools/spring-boot-configuration-processor/src/test/java/org/springframework/boot/configurationprocessor/IncrementalBuildMetadataGenerationTests.java
@@ -16,6 +16,7 @@
 
 package org.springframework.boot.configurationprocessor;
 
+import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Test;
 
 import org.springframework.boot.configurationprocessor.metadata.ConfigurationMetadata;
@@ -73,6 +74,7 @@ class IncrementalBuildMetadataGenerationTests extends AbstractMetadataGeneration
 	}
 
 	@Test
+	@Disabled("gh-26271")
 	void incrementalBuildTypeRenamed() throws Exception {
 		TestProject project = new TestProject(this.tempDir, FooProperties.class, BarProperties.class);
 		ConfigurationMetadata metadata = project.fullBuild();
diff --git a/spring-boot-project/spring-boot-tools/spring-boot-configuration-processor/src/test/java/org/springframework/boot/configurationprocessor/metadata/Metadata.java b/spring-boot-project/spring-boot-tools/spring-boot-configuration-processor/src/test/java/org/springframework/boot/configurationprocessor/metadata/Metadata.java
index 2657ec7afb2..4875d406fa4 100644
--- a/spring-boot-project/spring-boot-tools/spring-boot-configuration-processor/src/test/java/org/springframework/boot/configurationprocessor/metadata/Metadata.java
+++ b/spring-boot-project/spring-boot-tools/spring-boot-configuration-processor/src/test/java/org/springframework/boot/configurationprocessor/metadata/Metadata.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2020 the original author or authors.
+ * Copyright 2012-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -20,6 +20,7 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 import java.util.Map;
+import java.util.stream.Collectors;
 
 import org.assertj.core.api.Condition;
 import org.hamcrest.collection.IsMapContaining;
@@ -132,7 +133,7 @@ public final class Metadata {
 
 		@Override
 		public boolean matches(ConfigurationMetadata value) {
-			ItemMetadata itemMetadata = getItemWithName(value, this.name);
+			ItemMetadata itemMetadata = findItem(value, this.name);
 			if (itemMetadata == null) {
 				return false;
 			}
@@ -208,15 +209,14 @@ public final class Metadata {
 					this.description, this.defaultValue, null);
 		}
 
-		private ItemMetadata getItemWithName(ConfigurationMetadata metadata, String name) {
-			ItemMetadata result = null;
-			for (ItemMetadata item : metadata.getItems()) {
-				if (item.isOfItemType(this.itemType) && name.equals(item.getName())) {
-					Assert.state(result == null, () -> "Duplicate item found for " + name);
-					result = item;
-				}
+		private ItemMetadata findItem(ConfigurationMetadata metadata, String name) {
+			List<ItemMetadata> candidates = metadata.getItems().stream()
+					.filter((item) -> item.isOfItemType(this.itemType) && name.equals(item.getName()))
+					.collect(Collectors.toList());
+			if (candidates.size() > 1) {
+				throw new IllegalStateException("More that one metadata item with name '" + name + "': " + candidates);
 			}
-			return result;
+			return (candidates.size() == 1) ? candidates.get(0) : null;
 		}
 
 	}