diff --git a/README.md b/README.md
index 70275c6..6e5bc50 100644
--- a/README.md
+++ b/README.md
@@ -62,8 +62,8 @@ require 'ooxml_encryption'
 
 decryptor      = OoxmlEncryption.new
 decrypted_data = decryptor.decrypt(
-  encrypted_spreadsheeet_data: encrypted_data,
-  password:                    password
+  encrypted_spreadsheet_data: encrypted_data,
+  password:                   password
 )
 ```
 
diff --git a/lib/ooxml_encryption/ooxml_encryption.rb b/lib/ooxml_encryption/ooxml_encryption.rb
index 8f644b4..c35c297 100644
--- a/lib/ooxml_encryption/ooxml_encryption.rb
+++ b/lib/ooxml_encryption/ooxml_encryption.rb
@@ -299,15 +299,15 @@ def encrypt(unencrypted_spreadsheet_data:, password:)
   # underlying CFB file format used to store the data is not streamable itself;
   # see the SimpleCFB gem for details.
   #
-  # +encrypted_spreadsheeet_data+:: Encrypted OOXML input data as an ASCII-8BIT
+  # +encrypted_spreadsheet_data+:: Encrypted OOXML input data as an ASCII-8BIT
   #                                 encoded string.
   #
   # +password+::                    Password for decryption in your choice of
   #                                 string encoding.
   #
-  def decrypt(encrypted_spreadsheeet_data:, password:)
+  def decrypt(encrypted_spreadsheet_data:, password:)
     cfb = SimpleCfb.new
-    cfb.parse!(StringIO.new(encrypted_spreadsheeet_data))
+    cfb.parse!(StringIO.new(encrypted_spreadsheet_data))
 
     encryption_info_xml        = cfb.file_index.find { |f| f.name == 'EncryptionInfo'   }&.content
     encrypted_spreadsheet_data = cfb.file_index.find { |f| f.name == 'EncryptedPackage' }&.content
diff --git a/spec/lib/ooxml_encryption_spec.rb b/spec/lib/ooxml_encryption_spec.rb
index 016f956..376de91 100644
--- a/spec/lib/ooxml_encryption_spec.rb
+++ b/spec/lib/ooxml_encryption_spec.rb
@@ -29,8 +29,8 @@
 
       encryptor = described_class.new
       decrypted = encryptor.decrypt(
-        encrypted_spreadsheeet_data: input_enc_xlsx,
-        password:                    'secret'
+        encrypted_spreadsheet_data: input_enc_xlsx,
+        password:                   'secret'
       )
 
       expect(decrypted).to match(node_unenc_output)