diff --git a/lib/faraday/connection.rb b/lib/faraday/connection.rb
index daf23eb96..121b09fb5 100644
--- a/lib/faraday/connection.rb
+++ b/lib/faraday/connection.rb
@@ -471,10 +471,10 @@ def build_request(method)
     def build_exclusive_url(url = nil, params = nil, params_encoder = nil)
       url = nil if url.respond_to?(:empty?) && url.empty?
       base = url_prefix.dup
-      if url && base.path && base.path !~ %r{/$}
+      if url && !base.path.end_with?('/')
         base.path = "#{base.path}/" # ensure trailing slash
       end
-      url = url.to_s.gsub(':', '%3A') if url && URI.parse(url.to_s).opaque
+      url = url.to_s.gsub(':', '%3A') if Utils.URI(url.to_s).opaque
       uri = url ? base + url : base
       if params
         uri.query = params.to_query(params_encoder || options.params_encoder)