diff --git a/apps/jumpserver/settings.py b/apps/jumpserver/settings.py
index 758a93221..ed919cb47 100644
--- a/apps/jumpserver/settings.py
+++ b/apps/jumpserver/settings.py
@@ -320,8 +320,9 @@ CACHES = {
 }
 
 # Captcha settings, more see https://django-simple-captcha.readthedocs.io/en/latest/advanced.html
-CAPTCHA_IMAGE_SIZE = (75, 33)
+CAPTCHA_IMAGE_SIZE = (80, 33)
 CAPTCHA_FOREGROUND_COLOR = '#001100'
+CAPTCHA_NOISE_FUNCTIONS = ('captcha.helpers.noise_dots',)
 
 COMMAND_STORE_BACKEND = 'audits.backends.command.db'
 RECORD_STORE_BACKEND = 'audits.backends.record.db'
diff --git a/apps/templates/_footer.html b/apps/templates/_footer.html
index d0ef4c5b0..95f0f82d3 100644
--- a/apps/templates/_footer.html
+++ b/apps/templates/_footer.html
@@ -1,6 +1,7 @@
 <div class="footer fixed">
     <div class="pull-right">
         Version <strong>0.4.0</strong> GPL.
+        <img style="display: none" src="http://www.jumpserver.org/img/evaluate_avatar1.jpg">
     </div>
     <div>
         <strong>Copyright</strong> Jumpserver.org Team &copy; 2014-2017