diff --git a/src/main/java/org/springframework/data/jpa/repository/support/JpaMetamodelEntityInformation.java b/src/main/java/org/springframework/data/jpa/repository/support/JpaMetamodelEntityInformation.java
index 7c80c211a..8a6e3911d 100644
--- a/src/main/java/org/springframework/data/jpa/repository/support/JpaMetamodelEntityInformation.java
+++ b/src/main/java/org/springframework/data/jpa/repository/support/JpaMetamodelEntityInformation.java
@@ -412,13 +412,17 @@ public class JpaMetamodelEntityInformation<T, ID> extends JpaEntityInformationSu
 				return false;
 			}
 
-			try {
-				ManagedType<?> managedType = this.metamodel.managedType(ProxyUtils.getUserClass(value));
-				return managedType != null && managedType.getPersistenceType() == PersistenceType.ENTITY;
-			} catch (IllegalArgumentException iae) {
-				// no mapped type
+			Class<?> userClass = ProxyUtils.getUserClass(value);
+
+			if (!this.jpaMetamodel.isJpaManaged(userClass)) {
 				return false;
 			}
+
+			ManagedType<?> managedType = this.metamodel.managedType(userClass);
+
+			Assert.state(managedType != null, "ManagedType must not be null. We checked that it exists before.");
+
+			return managedType.getPersistenceType() == PersistenceType.ENTITY;
 		}
 	}
 }