diff --git a/lib/rubygems/request_set.rb b/lib/rubygems/request_set.rb
index 270bd9351e..c4bef7e1c9 100644
--- a/lib/rubygems/request_set.rb
+++ b/lib/rubygems/request_set.rb
@@ -447,7 +447,7 @@ class Gem::RequestSet
       next if dep.type == :development && !@development
 
       match = @requests.find do |r|
-        dep.match? r.spec.name, r.spec.version, r.spec.is_a?(Gem::Resolver::InstalledSpecification) || @prerelease
+        dep.match?(r.spec.name, r.spec.version, r.spec.is_a?(Gem::Resolver::InstalledSpecification) || @prerelease)
       end
 
       unless match