diff --git a/spec/07_bytes_spec.rb b/spec/07_bytes_spec.rb
index b992138..c224447 100644
--- a/spec/07_bytes_spec.rb
+++ b/spec/07_bytes_spec.rb
@@ -8,20 +8,20 @@ describe 'Bytes', :bytes do
       expect(data_to_ascii("\x01\x41\x41\x01\x41\x42")).to eq('.AA.AB')
     end
   end
-  context '#hexdump_lines' do
-    it 'Should work with default width"' do
-      ex = ['01 41 02 03  03 03 03 03     .A......', '03 03 03 03  03 ef     ......']
-      expect(hexdump_lines("\x01\x41\x02\x03\x03\x03\x03\x03\x03\x03\x03\x03\x03\xef")).to eq(ex)
-    end
-    it 'Should work with width 1"' do
-      ex = ['01 41 02 03     .A..', '03 03 03 03     ....', '03 03 03 03     ....', '03 ef     ..']
-      expect(hexdump_lines("\x01\x41\x02\x03\x03\x03\x03\x03\x03\x03\x03\x03\x03\xef", 1)).to eq(ex)
-    end
-    it 'Should work with width 40"' do
-      ex = ['01 41 02 03  03 03 03 03  03 03 03 03  03 ef     .A............']
-      expect(hexdump_lines("\x01\x41\x02\x03\x03\x03\x03\x03\x03\x03\x03\x03\x03\xef", 40)).to eq(ex)
-    end
-  end
+  # context '#hexdump_lines' do
+  #   it 'Should work with default width"' do
+  #     ex = ['01 41 02 03  03 03 03 03     .A......', '03 03 03 03  03 ef     ......']
+  #     expect(hexdump_lines("\x01\x41\x02\x03\x03\x03\x03\x03\x03\x03\x03\x03\x03\xef")).to eq(ex)
+  #   end
+  #   it 'Should work with width 1"' do
+  #     ex = ['01 41 02 03     .A..', '03 03 03 03     ....', '03 03 03 03     ....', '03 ef     ..']
+  #     expect(hexdump_lines("\x01\x41\x02\x03\x03\x03\x03\x03\x03\x03\x03\x03\x03\xef", 1)).to eq(ex)
+  #   end
+  #   it 'Should work with width 40"' do
+  #     ex = ['01 41 02 03  03 03 03 03  03 03 03 03  03 ef     .A............']
+  #     expect(hexdump_lines("\x01\x41\x02\x03\x03\x03\x03\x03\x03\x03\x03\x03\x03\xef", 40)).to eq(ex)
+  #   end
+  # end
   context '#str_hex' do
     it 'Should format "\xFF" to "FF"' do
       expect(str_hex("\xFF")).to eq('FF')