diff --git a/app/logical/current_user.rb b/app/logical/current_user.rb
index c18c91a59..d3631fa9c 100644
--- a/app/logical/current_user.rb
+++ b/app/logical/current_user.rb
@@ -53,7 +53,7 @@ class CurrentUser
   end
 
   def self.root_url
-    Thread.current[:current_root_url] || "http://#{Danbooru.config.hostname}/"
+    Thread.current[:current_root_url] || "https://#{Danbooru.config.hostname}/"
   end
 
   def self.root_url=(root_url)
diff --git a/app/logical/iqdb_proxy.rb b/app/logical/iqdb_proxy.rb
index d5330f562..09660bd3b 100644
--- a/app/logical/iqdb_proxy.rb
+++ b/app/logical/iqdb_proxy.rb
@@ -1,18 +1,22 @@
 class IqdbProxy
-  def self.query(url)
+  def self.query(image_url)
     raise NotImplementedError unless Danbooru.config.iqdbs_server.present?
 
     url = URI.parse(Danbooru.config.iqdbs_server)
     url.path = "/similar"
-    url.query = {url: url}.to_query
+    url.query = {url: image_url}.to_query
     json = HTTParty.get(url.to_s, Danbooru.config.httparty_options).parsed_response
     decorate_posts(json)
   end
 
   def self.decorate_posts(json)
     json.map do |x|
-      x["post"] = Post.find(x["id"])
-      x
-    end
+      begin
+        x["post"] = Post.find(x["id"])
+        x
+      rescue ActiveRecord::RecordNotFound
+        nil
+      end
+    end.compact
   end
 end