diff --git a/spec/ruby/core/process/clock_gettime_spec.rb b/spec/ruby/core/process/clock_gettime_spec.rb
index 3523338c3f..70ec2c4bb5 100644
--- a/spec/ruby/core/process/clock_gettime_spec.rb
+++ b/spec/ruby/core/process/clock_gettime_spec.rb
@@ -4,7 +4,7 @@ describe "Process.clock_gettime" do
   # This does not succeed with some platforms:
   # RHEL: https://rubyci.org/logs/rubyci.s3.amazonaws.com/rhel_zlinux/ruby-trunk/log/20181229T063303Z.fail.html.gz
   # Solaris: https://rubyci.org/logs/rubyci.s3.amazonaws.com/unstable11x/ruby-trunk/log/20181229T002409Z.fail.html.gz
-  platform_is_not :windows, :linux, :solaris do
+  platform_is_not :windows, :solaris do
     Process.constants.select { |c| c.to_s.start_with?('CLOCK_') }.each do |c|
       it "can be called with Process::#{c}" do
         value = Process.const_get(c)