diff --git a/spec/bundler/multilock_spec.rb b/spec/bundler/multilock_spec.rb
index be2c413..6ce7a8b 100644
--- a/spec/bundler/multilock_spec.rb
+++ b/spec/bundler/multilock_spec.rb
@@ -827,7 +827,12 @@
       end
     RUBY
 
-    with_gemfile(orig_gemfile) do
+    with_gemfile("") do
+      # install once with nothing so that it doesn't try to lock every single
+      # platform available for FFI
+      invoke_bundler("install")
+
+      write_gemfile(orig_gemfile)
       invoke_bundler("install")
 
       write_gemfile(<<~RUBY)