diff --git a/spring-restdocs-core/src/test/java/org/springframework/restdocs/constraints/ResourceBundleConstraintDescriptionResolverTests.java b/spring-restdocs-core/src/test/java/org/springframework/restdocs/constraints/ResourceBundleConstraintDescriptionResolverTests.java
index 25174d1a..dcaa522f 100644
--- a/spring-restdocs-core/src/test/java/org/springframework/restdocs/constraints/ResourceBundleConstraintDescriptionResolverTests.java
+++ b/spring-restdocs-core/src/test/java/org/springframework/restdocs/constraints/ResourceBundleConstraintDescriptionResolverTests.java
@@ -270,7 +270,7 @@ public class ResourceBundleConstraintDescriptionResolverTests {
 	private Constraint getConstraintFromField(String name) {
 		Annotation[] annotations = ReflectionUtils.findField(Constrained.class, name)
 				.getAnnotations();
-		Assert.isTrue(annotations.length == 1, "The field '" + name + "' must have"
+		Assert.isTrue(annotations.length == 1, "The field '" + name + "' must have "
 				+ "exactly one @Constrained annotation");
 		return new Constraint(annotations[0].annotationType().getName(),
 				AnnotationUtils.getAnnotationAttributes(annotations[0]));