diff --git a/lib/bundler/gem_helpers.rb b/lib/bundler/gem_helpers.rb
index 2e6d788f9c6f0a..f0d5ce135ac652 100644
--- a/lib/bundler/gem_helpers.rb
+++ b/lib/bundler/gem_helpers.rb
@@ -48,6 +48,13 @@ def select_best_platform_match(specs, platform)
     end
     module_function :select_best_platform_match
 
+    def force_ruby_platform(specs)
+      matching = specs.select {|spec| spec.match_platform(Gem::Platform::RUBY) && spec.force_ruby_platform! }
+
+      sort_best_platform_match(matching, Gem::Platform::RUBY)
+    end
+    module_function :force_ruby_platform
+
     def sort_best_platform_match(matching, platform)
       exact = matching.select {|spec| spec.platform == platform }
       return exact if exact.any?
diff --git a/lib/bundler/lazy_specification.rb b/lib/bundler/lazy_specification.rb
index 970869e0842da0..4a5a7d3f6635d4 100644
--- a/lib/bundler/lazy_specification.rb
+++ b/lib/bundler/lazy_specification.rb
@@ -133,6 +133,10 @@ def git_version
       " #{source.revision[0..6]}"
     end
 
+    def force_ruby_platform!
+      @force_ruby_platform = true
+    end
+
     private
 
     def use_exact_resolved_specifications?
diff --git a/lib/bundler/spec_set.rb b/lib/bundler/spec_set.rb
index 912ff8bf2ecc77..cb8f0fd1b26181 100644
--- a/lib/bundler/spec_set.rb
+++ b/lib/bundler/spec_set.rb
@@ -200,9 +200,11 @@ def tsort_each_node
 
     def specs_for_dependency(dep, platform)
       specs_for_name = lookup[dep.name]
-      target_platform = dep.force_ruby_platform ? Gem::Platform::RUBY : (platform || Bundler.local_platform)
-      matching_specs = GemHelpers.select_best_platform_match(specs_for_name, target_platform)
-      matching_specs.each {|s| s.force_ruby_platform = true } if dep.force_ruby_platform
+      matching_specs = if dep.force_ruby_platform
+        GemHelpers.force_ruby_platform(specs_for_name)
+      else
+        GemHelpers.select_best_platform_match(specs_for_name, platform || Bundler.local_platform)
+      end
       matching_specs.map!(&:materialize_for_installation).compact! if platform.nil?
       matching_specs
     end