diff --git a/lib/kafka_ex.ex b/lib/kafka_ex.ex
index 2fde081d..97c7111d 100644
--- a/lib/kafka_ex.ex
+++ b/lib/kafka_ex.ex
@@ -25,7 +25,7 @@ defmodule KafkaEx do
   alias KafkaEx.Server
   alias KafkaEx.Stream
 
-  @type uri() :: [{binary|char_list, number}]
+  @type uri() :: [{binary|[char], number}]
   @type worker_init :: [worker_setting]
   @type ssl_options :: [{:cacertfile, binary} |
                         {:certfile, binary} |
diff --git a/lib/kafka_ex/consumer_group/partition_assignment.ex b/lib/kafka_ex/consumer_group/partition_assignment.ex
index d2c53ecc..b082710a 100644
--- a/lib/kafka_ex/consumer_group/partition_assignment.ex
+++ b/lib/kafka_ex/consumer_group/partition_assignment.ex
@@ -32,7 +32,7 @@ defmodule KafkaEx.ConsumerGroup.PartitionAssignment do
   @typedoc """
   A function that can assign partitions.
 
- `members` is a list of member IDs and `partitions` is a list of partitions
+  `members` is a list of member IDs and `partitions` is a list of partitions
   that need to be assigned to a group member.
 
   The return value must be a map with member IDs as keys and a list of
diff --git a/lib/kafka_ex/gen_consumer.ex b/lib/kafka_ex/gen_consumer.ex
index 4ccfe38b..df390c5a 100644
--- a/lib/kafka_ex/gen_consumer.ex
+++ b/lib/kafka_ex/gen_consumer.ex
@@ -492,7 +492,6 @@ defmodule KafkaEx.GenConsumer do
 
   defp consume(
     %State{
-      worker_name: worker_name,
       topic: topic,
       partition: partition,
       current_offset: offset,
@@ -554,9 +553,6 @@ defmodule KafkaEx.GenConsumer do
       worker_name: worker_name,
       topic: topic,
       partition: partition,
-      current_offset: current_offset,
-      committed_offset: committed_offset,
-      acked_offset: acked_offset,
       auto_offset_reset: auto_offset_reset
     } = state
   ) do
diff --git a/lib/kafka_ex/network_client.ex b/lib/kafka_ex/network_client.ex
index 6f82515c..9ea1a89a 100644
--- a/lib/kafka_ex/network_client.ex
+++ b/lib/kafka_ex/network_client.ex
@@ -51,11 +51,11 @@ defmodule KafkaEx.NetworkClient do
     response
   end
 
-  @spec format_host(binary) :: char_list | :inet.ip_address
+  @spec format_host(binary) :: [char] | :inet.ip_address
   def format_host(host) do
     case Regex.scan(~r/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/, host) do
       [match_data] = [[_, _, _, _, _]] -> match_data |> tl |> List.flatten |> Enum.map(&String.to_integer/1) |> List.to_tuple
-      _ -> to_char_list(host)
+      _ -> apply(String, :to_char_list, [host]) # to_char_list is deprecated from Elixir 1.3 onward
     end
   end
 
diff --git a/lib/kafka_ex/server.ex b/lib/kafka_ex/server.ex
index c2faae38..34b96dcc 100644
--- a/lib/kafka_ex/server.ex
+++ b/lib/kafka_ex/server.ex
@@ -275,7 +275,7 @@ defmodule KafkaEx.Server do
       def terminate(_, state) do
         Logger.log(:debug, "Shutting down worker #{inspect state.worker_name}")
         if state.event_pid do
-          GenEvent.stop(state.event_pid)
+          :gen_event.stop(state.event_pid)
         end
         Enum.each(state.brokers, fn(broker) -> NetworkClient.close_socket(broker.socket) end)
       end
@@ -501,9 +501,9 @@ defmodule KafkaEx.Server do
       end
 
       defp remove_stale_brokers(brokers, metadata_brokers) do
-        {brokers_to_keep, brokers_to_remove} = Enum.partition(brokers, fn(broker) ->
+        {brokers_to_keep, brokers_to_remove} = apply(Enum, :partition, [brokers, fn(broker) ->
           Enum.find_value(metadata_brokers, &(broker.node_id == -1 || (broker.node_id == &1.node_id) && broker.socket && Socket.info(broker.socket)))
-        end)
+        end])
         case length(brokers_to_keep) do
           0 -> brokers_to_remove
           _ -> Enum.each(brokers_to_remove, fn(broker) ->
diff --git a/lib/kafka_ex/server_0_p_9_p_0.ex b/lib/kafka_ex/server_0_p_9_p_0.ex
index 3b9bee5c..e55cce1e 100644
--- a/lib/kafka_ex/server_0_p_9_p_0.ex
+++ b/lib/kafka_ex/server_0_p_9_p_0.ex
@@ -129,7 +129,7 @@ defmodule KafkaEx.Server0P9P0 do
     state
   ) do
     unless consumer_group?(state) do
-      raise ConnsumerGroupRequiredError, request
+      raise ConsumerGroupRequiredError, request
     end
 
     {broker, state} = broker_for_consumer_group_with_update(state)
diff --git a/lib/kafka_ex/stream.ex b/lib/kafka_ex/stream.ex
index e4effd78..cdf1cf57 100644
--- a/lib/kafka_ex/stream.ex
+++ b/lib/kafka_ex/stream.ex
@@ -44,6 +44,10 @@ defmodule KafkaEx.Stream do
       {:error, __MODULE__}
     end
 
+    def slice(_stream) do
+      {:error, __MODULE__}
+    end
+
     ######################################################################
     # Main stream flow control