diff --git a/src/main/java/org/springframework/data/repository/core/support/RepositoryFragment.java b/src/main/java/org/springframework/data/repository/core/support/RepositoryFragment.java
index 4e9648f8dc..c96ebc0b3d 100644
--- a/src/main/java/org/springframework/data/repository/core/support/RepositoryFragment.java
+++ b/src/main/java/org/springframework/data/repository/core/support/RepositoryFragment.java
@@ -175,8 +175,8 @@ public ImplementedRepositoryFragment(Optional<Class<T>> interfaceClass, T implem
 			interfaceClass.ifPresent(it -> {
 
 				Assert.isTrue(ClassUtils.isAssignableValue(it, implementation),
-						() -> String.format("Fragment implementation %s does not implement %s!", ClassUtils.getQualifiedName(it),
-								ClassUtils.getQualifiedName(implementation.getClass())));
+						() -> String.format("Fragment implementation %s does not implement %s!",
+								ClassUtils.getQualifiedName(implementation.getClass()), ClassUtils.getQualifiedName(it)));
 			});
 
 			this.interfaceClass = interfaceClass;