diff --git a/modules/exploits/linux/http/empire_skywalker.rb b/modules/exploits/linux/http/empire_skywalker.rb
index 589b4e809b..e029c08c76 100644
--- a/modules/exploits/linux/http/empire_skywalker.rb
+++ b/modules/exploits/linux/http/empire_skywalker.rb
@@ -351,7 +351,7 @@ class MetasploitModule < Msf::Exploit::Remote
     sha256_digest = OpenSSL::Digest.new('sha256')
     expected = OpenSSL::HMAC.digest(sha256_digest, key, data[..-11])[..9]
     unless OpenSSL::HMAC.digest(sha256_digest, key, mac) == OpenSSL::HMAC.digest(sha256_digest, key, expected)
-      raise "Invalid ciphertext received." 
+      raise "Invalid ciphertext received."
     end
 
     size = key.length * 8