1 files changed, 12 insertions, 10 deletions
diff --git a/spec/ruby/core/time/shared/now.rb b/spec/ruby/core/time/shared/now.rb
index 80f66a1134..d8e5ac9d50 100644
--- a/spec/ruby/core/time/shared/now.rb
+++ b/spec/ruby/core/time/shared/now.rb
@@ -18,16 +18,18 @@ describe :time_now, shared: true do
     end
   end
 
-  it "has at least microsecond precision" do
-    times = []
-    10_000.times do
-      times << Time.now.nsec
-    end
+  guard_not -> { platform_is :windows and ruby_version_is ""..."2.5" } do
+    it "has at least microsecond precision" do
+      times = []
+      10_000.times do
+        times << Time.now.nsec
+      end
 
-    # The clock should not be less accurate than expected (times should
-    # not all be a multiple of the next precision up, assuming precisions
-    # are multiples of ten.)
-    expected = 1_000
-    times.select { |t| t % (expected * 10) == 0  }.size.should_not == times.size
+      # The clock should not be less accurate than expected (times should
+      # not all be a multiple of the next precision up, assuming precisions
+      # are multiples of ten.)
+      expected = 1_000
+      times.select { |t| t % (expected * 10) == 0  }.size.should_not == times.size
+    end
   end
 end