diff --git a/spec/rmagick/image/format_spec.rb b/spec/rmagick/image/format_spec.rb
index <HASH>..<HASH> 100644
--- a/spec/rmagick/image/format_spec.rb
+++ b/spec/rmagick/image/format_spec.rb
@@ -8,7 +8,6 @@ RSpec.describe Magick::Image, '#format' do
     expect { image.format = 'JPG' }.not_to raise_error
     expect { image.format = 'TIFF' }.not_to raise_error
     expect { image.format = 'MIFF' }.not_to raise_error
-    expect { image.format = 'MPEG' }.not_to raise_error
     v = $VERBOSE
     $VERBOSE = nil
     expect { image.format = 'shit' }.to raise_error(ArgumentError)
RSpec: Remove MPEG format because it was renamed at <I>-<I> and <I>-<I> (#<I>)

See: <URL>