diff --git a/lib/unisec/cli/hexdump.rb b/lib/unisec/cli/hexdump.rb
index dc985d1..90f1eca 100644
--- a/lib/unisec/cli/hexdump.rb
+++ b/lib/unisec/cli/hexdump.rb
@@ -17,6 +17,9 @@ module Commands
       # UTF-16LE: 4100 4300 4300 4500 4900 5300
       # UTF-32BE: 00000041 00000043 00000043 00000045 00000049 00000053
       # UTF-32LE: 41000000 43000000 43000000 45000000 49000000 53000000
+      #
+      # $unisec hexdump "ACCEIS" --enc utf16le
+      # 4100 4300 4300 4500 4900 5300
       # ```
       class Hexdump < Dry::CLI::Command
         desc 'Hexdump in all Unicode encodings'
diff --git a/lib/unisec/hexdump.rb b/lib/unisec/hexdump.rb
index 8378b4e..42efe25 100644
--- a/lib/unisec/hexdump.rb
+++ b/lib/unisec/hexdump.rb
@@ -86,6 +86,7 @@ def self.utf32le(str)
     end
 
     # Display a CLI-friendly output summurizing the hexdump in all Unicode encodings
+    # @return [String] CLI-ready output
     # @example
     #   puts Unisec::Hexdump.new('K').display # =>
     #   # UTF-8: e2 84 aa
diff --git a/lib/unisec/surrogates.rb b/lib/unisec/surrogates.rb
index a9cb9af..3e7c814 100644
--- a/lib/unisec/surrogates.rb
+++ b/lib/unisec/surrogates.rb
@@ -102,6 +102,7 @@ def code_point
     # Display a CLI-friendly output summurizing everithing about the surrogates:
     # the corresponding character, code point, high and low surrogates
     # (each displayed as hexadecimal, decimal and binary).
+    # @return [String] CLI-ready output
     # @example
     #   surr = Unisec::Surrogates.new(128169)
     #   puts surr.display # =>