diff --git a/lib/suo/client/base.rb b/lib/suo/client/base.rb
index 10ab061..f6dc8be 100644
--- a/lib/suo/client/base.rb
+++ b/lib/suo/client/base.rb
@@ -1,6 +1,7 @@
 module Suo
   module Client
     class Base
+
       DEFAULT_OPTIONS = {
         retry_timeout: 0.1,
         retry_delay: 0.01,
@@ -111,7 +112,7 @@ module Suo
             break unless acquisition_lock
             break if set(key, serialize_locks(locks), cas, options)
           end
-        rescue FailedToAcquireLock => _ # rubocop:disable Lint/HandleExceptions
+        rescue LockClientError => _ # rubocop:disable Lint/HandleExceptions
           # ignore - assume success due to optimistic locking
         end
 
@@ -163,7 +164,7 @@ module Suo
             sleep(rand(options[:retry_delay] * 1000).to_f / 1000)
           end
         rescue => _
-          raise FailedToAcquireLock
+          raise LockClientError
         end
 
         def serialize_locks(locks)
diff --git a/lib/suo/client/errors.rb b/lib/suo/client/errors.rb
deleted file mode 100644
index 15fee88..0000000
--- a/lib/suo/client/errors.rb
+++ /dev/null
@@ -1,7 +0,0 @@
-module Suo
-  module Client
-    module Errors
-      class FailedToAcquireLock < StandardError; end
-    end
-  end
-end
diff --git a/lib/suo/clients.rb b/lib/suo/clients.rb
index c9e741a..e8f1151 100644
--- a/lib/suo/clients.rb
+++ b/lib/suo/clients.rb
@@ -8,7 +8,7 @@ require "redis"
 
 require "msgpack"
 
-require "suo/client/errors"
+require "suo/errors"
 require "suo/client/base"
 require "suo/client/memcached"
 require "suo/client/redis"
diff --git a/lib/suo/errors.rb b/lib/suo/errors.rb
new file mode 100644
index 0000000..f7f2331
--- /dev/null
+++ b/lib/suo/errors.rb
@@ -0,0 +1,3 @@
+module Suo
+  class LockClientError < StandardError; end
+end
diff --git a/test/client_test.rb b/test/client_test.rb
index 8fcf41c..d5c9492 100644
--- a/test/client_test.rb
+++ b/test/client_test.rb
@@ -11,6 +11,12 @@ module ClientTests
     assert_equal "Client required", exception.message
   end
 
+  def test_throws_failed_error_on_bad_client
+    assert_raises(Suo::LockClientError) do
+      @klass.lock(TEST_KEY, 1, client: {})
+    end
+  end
+
   def test_class_single_resource_locking
     lock1 = @klass.lock(TEST_KEY, 1, client: @klass_client)
     refute_nil lock1