diff --git a/jspwiki-main/src/main/java/org/apache/wiki/auth/login/CookieAuthenticationLoginModule.java b/jspwiki-main/src/main/java/org/apache/wiki/auth/login/CookieAuthenticationLoginModule.java
index 1d98e66cbd..12edf886e0 100644
--- a/jspwiki-main/src/main/java/org/apache/wiki/auth/login/CookieAuthenticationLoginModule.java
+++ b/jspwiki-main/src/main/java/org/apache/wiki/auth/login/CookieAuthenticationLoginModule.java
@@ -178,7 +178,7 @@ private static File getCookieFile( final Engine engine, final String uid ) {
         //  Find the cookie file
         final File file = new File( cookieDir, uid );
         try {
-            if( file.getCanonicalPath().startsWith( cookieDir.getCanonicalPath() ) ) {
+            if( file.getCanonicalFile().toPath().startsWith(cookieDir.getCanonicalFile().toPath()) ) {
                 return file;
             }
         } catch( final IOException e ) {