diff --git a/test/unit/assets_test.rb b/test/unit/assets_test.rb
index 46dd6eaa9..fc7a33be8 100644
--- a/test/unit/assets_test.rb
+++ b/test/unit/assets_test.rb
@@ -86,7 +86,7 @@ class AssetsTest < ActiveSupport::TestCase
     # touch org, check if user1 has changed
     sleep 2
     org2 = Organization.find(org.id)
-    org2.note = "some note...#{rand(9999999999999)}"
+    org2.note = "some note...#{rand(9_999_999_999_999)}"
     org2.save
 
     attributes = org2.attributes_with_associations
diff --git a/test/unit/object_cache_test.rb b/test/unit/object_cache_test.rb
index 6af04c1fc..5ca3cb821 100644
--- a/test/unit/object_cache_test.rb
+++ b/test/unit/object_cache_test.rb
@@ -54,7 +54,7 @@ class ObjectCacheTest < ActiveSupport::TestCase
 
     # update group
     group1 = groups.first
-    group1.note = "some note #{rand(9999999999)}"
+    group1.note = "some note #{rand(9_999_999_999)}"
     group1.save
 
     assets = user1.assets({})