diff --git a/src/app/FTPServer.h b/src/app/FTPServer.h
index fadc76f..0e23015 100644
--- a/src/app/FTPServer.h
+++ b/src/app/FTPServer.h
@@ -473,7 +473,7 @@ class FTPServer : public TCPServer<T>
             char *dirCopy = (char *)malloc((sizeof(char) * strlen(client->_currentDirectory)) + 1);
             strcpy(dirCopy, client->_currentDirectory);
             
-            char *p = lastIndexOf(dirCopy, '/');
+            char *p = strrchr(dirCopy, '/');
             if (dirCopy == p)
             {
               *(p + 1) = '\0';