diff --git a/app/assets/javascripts/blacklists.js b/app/assets/javascripts/blacklists.js
index 7d46f058f..a8d45f9c2 100644
--- a/app/assets/javascripts/blacklists.js
+++ b/app/assets/javascripts/blacklists.js
@@ -38,9 +38,12 @@
     })[0];
     if (match) {
       match.disabled = !match.disabled;
+      var hash = tags.hash();
       if (match.disabled) {
+        Danbooru.Cookie.put("bl:" + hash, "1", "session");
         $(e.target).addClass("blacklisted-active");
       } else {
+        Danbooru.Cookie.remove("bl:" + hash);
         $(e.target).removeClass("blacklisted-active");
       }
     }
@@ -56,9 +59,13 @@
       var item = $("<li/>");
       var link = $("<a/>");
       var count = $("<span/>");
+      var hash = entry.tags.hash();
 
       link.text(entry.tags);
       link.click(Danbooru.Blacklist.toggle_entry);
+      if (Danbooru.Cookie.get("bl:" + hash)) {
+        link.click();
+      }
       count.html(entry.hits);
       item.append(link);
       item.append(" ");
@@ -162,6 +169,6 @@ $(document).ready(function() {
   if ($("#c-moderator-post-queues").length) {
     return;
   }
-  
+
   Danbooru.Blacklist.initialize_all();
 });
diff --git a/app/assets/javascripts/cookie.js b/app/assets/javascripts/cookie.js
index e1aa6aeca..d6565adb3 100644
--- a/app/assets/javascripts/cookie.js
+++ b/app/assets/javascripts/cookie.js
@@ -2,14 +2,18 @@
   Danbooru.Cookie = {};
 
   Danbooru.Cookie.put = function(name, value, days) {
-    if (days == null) {
-      days = 365;
+    var expires = "";
+    if (days !== "session") {
+      if (!days) {
+        days = 365;
+      }
+
+      var date = new Date();
+      date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
+      expires = "expires=" + date.toGMTString() + "; ";
     }
 
-    var date = new Date();
-    date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
-    var expires = "; expires=" + date.toGMTString();
-    document.cookie = name + "=" + encodeURIComponent(value) + expires + "; path=/";
+    document.cookie = name + "=" + encodeURIComponent(value) + "; " + expires + "path=/";
   }
 
   Danbooru.Cookie.raw_get = function(name) {
diff --git a/app/assets/javascripts/utility.js b/app/assets/javascripts/utility.js
index b2c28353a..bc0a258d6 100644
--- a/app/assets/javascripts/utility.js
+++ b/app/assets/javascripts/utility.js
@@ -99,6 +99,15 @@
     return string.replace(/([.?*+^$[\]\\(){}|-])/g, "\\$1");
   }
 
+  String.prototype.hash = function() {
+    var hash = 5381, i = this.length;
+
+    while(i)
+      hash = (hash * 33) ^ this.charCodeAt(--i)
+
+    return hash >>> 0;
+  }
+
   $.fn.selectRange = function(start, end) {
     return this.each(function() {
       if (this.setSelectionRange) {