1 files changed, 3 insertions, 4 deletions
diff --git a/lib/rubygems/resolver/installed_specification.rb b/lib/rubygems/resolver/installed_specification.rb
index d9c6a5e5cf..9d996fc1da 100644
--- a/lib/rubygems/resolver/installed_specification.rb
+++ b/lib/rubygems/resolver/installed_specification.rb
@@ -5,7 +5,7 @@
 
 class Gem::Resolver::InstalledSpecification < Gem::Resolver::SpecSpecification
 
-  def == other # :nodoc:
+  def ==(other) # :nodoc:
     self.class === other and
       @set  == other.set and
       @spec == other.spec
@@ -15,7 +15,7 @@ class Gem::Resolver::InstalledSpecification < Gem::Resolver::SpecSpecification
   # This is a null install as this specification is already installed.
   # +options+ are ignored.
 
-  def install options = {}
+  def install(options = {})
     yield nil
   end
 
@@ -30,7 +30,7 @@ class Gem::Resolver::InstalledSpecification < Gem::Resolver::SpecSpecification
     super
   end
 
-  def pretty_print q # :nodoc:
+  def pretty_print(q) # :nodoc:
     q.group 2, '[InstalledSpecification', ']' do
       q.breakable
       q.text "name: #{name}"
@@ -56,4 +56,3 @@ class Gem::Resolver::InstalledSpecification < Gem::Resolver::SpecSpecification
   end
 
 end
-