diff --git a/extensions/guacamole-auth-cas/src/main/java/org/apache/guacamole/auth/cas/ticket/TicketValidationService.java b/extensions/guacamole-auth-cas/src/main/java/org/apache/guacamole/auth/cas/ticket/TicketValidationService.java
index f64481dda..122059c6d 100644
--- a/extensions/guacamole-auth-cas/src/main/java/org/apache/guacamole/auth/cas/ticket/TicketValidationService.java
+++ b/extensions/guacamole-auth-cas/src/main/java/org/apache/guacamole/auth/cas/ticket/TicketValidationService.java
@@ -173,7 +173,7 @@ public class TicketValidationService {
             throw new GuacamoleServerException("Unexpected algorithm for the private key.", e);
         }
         catch (NoSuchPaddingException e) {
-            throw new GuacamoleServerException("No such padding tryingto initialize cipher with private key.", e);
+            throw new GuacamoleServerException("No such padding trying to initialize cipher with private key.", e);
         }
 
     }