diff --git a/4chan_x.user.js b/4chan_x.user.js
index 3b9f3295e..e4b02eda5 100644
--- a/4chan_x.user.js
+++ b/4chan_x.user.js
@@ -2404,6 +2404,11 @@
         QR.captcha.count(captchas.length);
         if (!response) {
           err = 'No valid captcha.';
+        } else {
+          response = response.trim();
+          if (!/\s/.test(response)) {
+            response = "" + response + " " + response;
+          }
         }
       }
       if (err) {
@@ -2435,7 +2440,7 @@
         mode: 'regist',
         pwd: (m = d.cookie.match(/4chan_pass=([^;]+)/)) ? decodeURIComponent(m[1]) : $('input[name=pwd]').value,
         recaptcha_challenge_field: challenge,
-        recaptcha_response_field: response.replace(/^\s+/, 'a ').replace(/\s+$/, ' a')
+        recaptcha_response_field: response
       };
       callbacks = {
         onload: function() {
diff --git a/changelog b/changelog
index 43ad1d398..f3ded16ca 100644
--- a/changelog
+++ b/changelog
@@ -1,4 +1,6 @@
 master
+- Mayhem
+  One-word-captcha: you don't need to input an extra space anymore, the true word will be duplicated.
 
 2.34.7
 - Mayhem
diff --git a/script.coffee b/script.coffee
index 32d38b95f..b392e3e5e 100644
--- a/script.coffee
+++ b/script.coffee
@@ -1863,6 +1863,11 @@ QR =
       QR.captcha.count captchas.length
       unless response
         err = 'No valid captcha.'
+      else
+        response = response.trim()
+        # one-word-captcha:
+        # If there's only one word, duplicate it.
+        response = "#{response} #{response}" unless /\s/.test response
 
     if err
       # stop auto-posting
@@ -1896,7 +1901,7 @@ QR =
       mode:     'regist'
       pwd: if m = d.cookie.match(/4chan_pass=([^;]+)/) then decodeURIComponent m[1] else $('input[name=pwd]').value
       recaptcha_challenge_field: challenge
-      recaptcha_response_field:  response.replace(/^\s+/, 'a ').replace /\s+$/, ' a'
+      recaptcha_response_field:  response
 
     callbacks =
       onload: ->