diff --git a/Gemfile.lock b/Gemfile.lock
index f25f2a3f..64ae73e6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -139,6 +139,7 @@ GEM
       multipart-post (~> 2)
     faraday-net_http (3.3.0)
       net-http
+    ffi (1.17.0-arm64-darwin)
     ffi (1.17.0-x86_64-darwin)
     ffi (1.17.0-x86_64-linux-gnu)
     gli (2.21.5)
@@ -416,6 +417,7 @@ GEM
     zeitwerk (2.6.17)
 
 PLATFORMS
+  arm64-darwin-24
   x86_64-darwin-22
   x86_64-linux
 
diff --git a/app/models/speaker.rb b/app/models/speaker.rb
index 35482204..44d44044 100644
--- a/app/models/speaker.rb
+++ b/app/models/speaker.rb
@@ -43,7 +43,7 @@ def format_links
   end
 
   def url_exists?
-    links.each_value { |_, url| errors.add(:links, 'This url is not valid') unless url_valid?(url) }
+    links.each_value { |url| errors.add(:links, 'This url is not valid') unless url_valid?(url) }
   end
 
   def empty_links?