diff --git a/src/rebar_deps.erl b/src/rebar_deps.erl
index 641f92c..9f7ea06 100644
--- a/src/rebar_deps.erl
+++ b/src/rebar_deps.erl
@@ -148,7 +148,7 @@ update_deps_code_path([]) ->
 update_deps_code_path([Dep | Rest]) ->
     case is_app_available(Dep#dep.app, Dep#dep.vsn_regex, Dep#dep.dir) of
         {true, _} ->
-            code:add_patha(filename:join(Dep#dep.dir, ebin));
+            code:add_patha(filename:join(Dep#dep.dir, "ebin"));
         false ->
             ok
     end,
@@ -249,7 +249,7 @@ use_source(Dep, Count) ->
                 {true, _} ->
                     %% Available version matches up -- we're good to go; add the
                     %% app dir to our code path
-                    code:add_patha(filename:join(Dep#dep.dir, ebin)),
+                    code:add_patha(filename:join(Dep#dep.dir, "ebin")),
                     Dep;
                 false ->
                     %% The app that was downloaded doesn't match up (or had
diff --git a/src/rebar_port_compiler.erl b/src/rebar_port_compiler.erl
index d07b369..d962b28 100644
--- a/src/rebar_port_compiler.erl
+++ b/src/rebar_port_compiler.erl
@@ -315,7 +315,7 @@ default_env() ->
      {"CC", "cc"},
      {"CXX", "c++"},
      {"ERL_CFLAGS", lists:concat([" -I", code:lib_dir(erl_interface, include),
-                                  " -I", filename:join(erts_dir(), include),
+                                  " -I", filename:join(erts_dir(), "include"),
                                   " "])},
      {"ERL_LDFLAGS", lists:concat([" -L", code:lib_dir(erl_interface, lib),
                                    " -lerl_interface -lei"])},