diff --git a/docking-api/src/io/github/andrewauclair/moderndocking/exception/DockableRegistrationFailureException.java b/docking-api/src/io/github/andrewauclair/moderndocking/exception/DockableRegistrationFailureException.java
index 705bc474..b2080a07 100644
--- a/docking-api/src/io/github/andrewauclair/moderndocking/exception/DockableRegistrationFailureException.java
+++ b/docking-api/src/io/github/andrewauclair/moderndocking/exception/DockableRegistrationFailureException.java
@@ -36,7 +36,7 @@ public class DockableRegistrationFailureException extends RuntimeException {
 	 * @param persistentID The persistentID of dockable that failed to register
 	 */
 	public DockableRegistrationFailureException(String persistentID) {
-		super("Dockable with Persistent ID " + persistentID + " has not been registered.");
+		super("Dockable with Persistent ID " + persistentID + " has already been registered.");
 		this.persistentID = persistentID;
 	}