diff --git a/initializr-generator/src/main/java/io/spring/initializr/metadata/ServiceCapability.java b/initializr-generator/src/main/java/io/spring/initializr/metadata/ServiceCapability.java
index 89375160..8bd6fec6 100644
--- a/initializr-generator/src/main/java/io/spring/initializr/metadata/ServiceCapability.java
+++ b/initializr-generator/src/main/java/io/spring/initializr/metadata/ServiceCapability.java
@@ -97,8 +97,8 @@ public abstract class ServiceCapability<T> implements Cloneable {
 	 */
 	public void merge(ServiceCapability<T> other) {
 		Assert.notNull(other, "Other must not be null");
-		Assert.state(this.id.equals(other.id));
-		Assert.state(this.type.equals(other.type));
+		Assert.isTrue(this.id.equals(other.id), "Ids must be equals");
+		Assert.isTrue(this.type.equals(other.type), "Types must be equals");
 		if (StringUtils.hasText(other.title)) {
 			this.title = other.title;
 		}