diff --git a/app/helpers/timer_helper.rb b/app/helpers/timer_helper.rb
index a81e869..592a06b 100644
--- a/app/helpers/timer_helper.rb
+++ b/app/helpers/timer_helper.rb
@@ -4,7 +4,7 @@ def format_time(time)
     run_rand_20 if rand_run(0.2)
     run_rand_50 if rand_run(0.5)
     run_rand_90 if rand_run(0.9)
-    time.strftime('%Y-%m-%d:%H:%M:%S')
+    time.strftime('%Y-%m-%d::%H:%M:%S')
   end
 
   def rand_run(value)
diff --git a/spec/helpers/timer_helper_spec.rb b/spec/helpers/timer_helper_spec.rb
index fa20a68..2753cd2 100644
--- a/spec/helpers/timer_helper_spec.rb
+++ b/spec/helpers/timer_helper_spec.rb
@@ -5,7 +5,7 @@
     it "returns correctly formatted time" do
       100.times do
         current_time = Time.now()
-        expect(helper.format_time(current_time)).to eql(current_time.strftime('%Y-%m-%d:%H:%M:%S'))
+        expect(helper.format_time(current_time)).to eql(current_time.strftime('%Y-%m-%d::%H:%M:%S'))
       end
     end
   end