diff --git a/lib/rubygems/resolver/installer_set.rb b/lib/rubygems/resolver/installer_set.rb
index f663ce4ad581..5e18be50ef21 100644
--- a/lib/rubygems/resolver/installer_set.rb
+++ b/lib/rubygems/resolver/installer_set.rb
@@ -66,7 +66,7 @@ def add_always_install(dependency)
 
     found = found.select do |s|
       Gem::Source::SpecificFile === s.source ||
-        Gem::Platform.match(s.platform)
+        Gem::Platform.match_spec?(s)
     end
 
     found = found.sort_by do |s|