diff --git a/lib/erb.rb b/lib/erb.rb
index d2ea64ab60..f8533efda9 100644
--- a/lib/erb.rb
+++ b/lib/erb.rb
@@ -809,14 +809,14 @@ class ERB
   def initialize(str, safe_level=NOT_GIVEN, legacy_trim_mode=NOT_GIVEN, legacy_eoutvar=NOT_GIVEN, trim_mode: nil, eoutvar: '_erbout')
     # Complex initializer for $SAFE deprecation at [Feature #14256]. Use keyword arguments to pass trim_mode or eoutvar.
     if safe_level != NOT_GIVEN
-      warn 'Passing safe_level with the 2nd argument of ERB.new is deprecated. Do not use it, and specify other arguments as keyword arguments.', uplevel: 1 if $VERBOSE || !ZERO_SAFE_LEVELS.include?(safe_level)
+      warn 'Passing safe_level with the 2nd argument of ERB.new is deprecated. Do not use it, and specify other arguments as keyword arguments.', uplevel: 1
     end
     if legacy_trim_mode != NOT_GIVEN
-      warn 'Passing trim_mode with the 3rd argument of ERB.new is deprecated. Use keyword argument like ERB.new(str, trim_mode: ...) instead.', uplevel: 1 if $VERBOSE
+      warn 'Passing trim_mode with the 3rd argument of ERB.new is deprecated. Use keyword argument like ERB.new(str, trim_mode: ...) instead.', uplevel: 1
       trim_mode = legacy_trim_mode
     end
     if legacy_eoutvar != NOT_GIVEN
-      warn 'Passing eoutvar with the 4th argument of ERB.new is deprecated. Use keyword argument like ERB.new(str, eoutvar: ...) instead.', uplevel: 1 if $VERBOSE
+      warn 'Passing eoutvar with the 4th argument of ERB.new is deprecated. Use keyword argument like ERB.new(str, eoutvar: ...) instead.', uplevel: 1
       eoutvar = legacy_eoutvar
     end
 
@@ -829,8 +829,6 @@ class ERB
   end
   NOT_GIVEN = Object.new
   private_constant :NOT_GIVEN
-  ZERO_SAFE_LEVELS = [0, nil]
-  private_constant :ZERO_SAFE_LEVELS
 
   ##
   # Creates a new compiler for ERB.  See ERB::Compiler.new for details
diff --git a/test/erb/test_erb.rb b/test/erb/test_erb.rb
index d3e9b6c944..fb5e9b611e 100644
--- a/test/erb/test_erb.rb
+++ b/test/erb/test_erb.rb
@@ -663,26 +663,20 @@ EOS
 
   # [deprecated] These interfaces will be removed later
   def test_deprecated_interface_warnings
-    [nil, 0].each do |safe|
-      assert_warning(/2nd argument of ERB.new is deprecated/) do
-        ERB.new('', safe)
-      end
-    end
-
-    [1, 2].each do |safe|
+    [nil, 0, 1, 2].each do |safe|
       assert_warn(/2nd argument of ERB.new is deprecated/) do
         ERB.new('', safe)
       end
     end
 
     [nil, '', '%', '%<>'].each do |trim|
-      assert_warning(/3rd argument of ERB.new is deprecated/) do
+      assert_warn(/3rd argument of ERB.new is deprecated/) do
         ERB.new('', nil, trim)
       end
     end
 
     [nil, '_erbout', '_hamlout'].each do |eoutvar|
-      assert_warning(/4th argument of ERB.new is deprecated/) do
+      assert_warn(/4th argument of ERB.new is deprecated/) do
         ERB.new('', nil, nil, eoutvar)
       end
     end