diff --git a/core/src/test/java/org/acegisecurity/providers/cas/populator/DaoCasAuthoritiesPopulatorTests.java b/core/src/test/java/org/acegisecurity/providers/cas/populator/DaoCasAuthoritiesPopulatorTests.java
index 9c9254ffe8..1e47d837b6 100644
--- a/core/src/test/java/org/acegisecurity/providers/cas/populator/DaoCasAuthoritiesPopulatorTests.java
+++ b/core/src/test/java/org/acegisecurity/providers/cas/populator/DaoCasAuthoritiesPopulatorTests.java
@@ -63,7 +63,7 @@ public class DaoCasAuthoritiesPopulatorTests extends TestCase {
             populator.afterPropertiesSet();
             fail("Should have thrown IllegalArgumentException");
         } catch (IllegalArgumentException expected) {
-            assertEquals("An authenticationDao must be set", expected.getMessage());
+            assertEquals("A UserDetailsService must be set", expected.getMessage());
         }
     }