diff --git a/src/rebar_utils.erl b/src/rebar_utils.erl
index ae27455..7dbb8f7 100644
--- a/src/rebar_utils.erl
+++ b/src/rebar_utils.erl
@@ -29,7 +29,6 @@
 -export([get_cwd/0,
          is_arch/1,
          get_arch/0,
-         get_os/0,
          sh/2,
          find_files/2,
          now_str/0,
@@ -63,15 +62,6 @@ get_arch() ->
     Words = integer_to_list(8 * erlang:system_info(wordsize)),
     erlang:system_info(system_architecture) ++ "-" ++ Words.
 
-get_os() ->
-    Arch = erlang:system_info(system_architecture),
-    case match_first([{"linux", linux}, {"darwin", darwin}], Arch) of
-        nomatch ->
-            {unknown, Arch};
-        ArchAtom ->
-            ArchAtom
-    end.
-
 %%
 %% Options = [Option] -- defaults to [use_stdout, abort_on_error]
 %% Option = ErrorOption | OutputOption | {cd, string()} | {env, Env}
@@ -164,16 +154,6 @@ find_executable(Name) ->
 %% Internal functions
 %% ====================================================================
 
-match_first([], _Val) ->
-    nomatch;
-match_first([{Regex, MatchValue} | Rest], Val) ->
-    case re:run(Val, Regex, [{capture, none}]) of
-        match ->
-            MatchValue;
-        nomatch ->
-           match_first(Rest, Val)
-    end.
-
 expand_sh_flag(return_on_error) ->
     {error_handler,
      fun(_Command, Rc) ->