1 files changed, 3 insertions, 3 deletions
diff --git a/spec/lib/gitlab/metrics/system_spec.rb b/spec/lib/gitlab/metrics/system_spec.rb
index 9e2ea89a712..4d94d8705fb 100644
--- a/spec/lib/gitlab/metrics/system_spec.rb
+++ b/spec/lib/gitlab/metrics/system_spec.rb
@@ -29,19 +29,19 @@ describe Gitlab::Metrics::System do
 
   describe '.cpu_time' do
     it 'returns a Fixnum' do
-      expect(described_class.cpu_time).to be_an_instance_of(Fixnum)
+      expect(described_class.cpu_time).to be_an(Integer)
     end
   end
 
   describe '.real_time' do
     it 'returns a Fixnum' do
-      expect(described_class.real_time).to be_an_instance_of(Fixnum)
+      expect(described_class.real_time).to be_an(Integer)
     end
   end
 
   describe '.monotonic_time' do
     it 'returns a Fixnum' do
-      expect(described_class.monotonic_time).to be_an_instance_of(Fixnum)
+      expect(described_class.monotonic_time).to be_an(Integer)
     end
   end
 end