diff --git a/pex/environment.py b/pex/environment.py
index 492e99edb..9f9c056c0 100644
--- a/pex/environment.py
+++ b/pex/environment.py
@@ -122,9 +122,12 @@ def __init__(self, pex, pex_info, interpreter=None, **kw):
     self._supported_tags = []
 
     platform = Platform.current()
+    platform_name = platform.platform
     super(PEXEnvironment, self).__init__(
       search_path=[] if pex_info.inherit_path == 'false' else sys.path,
-      platform=platform.platform,
+      # NB: Our pkg_resources.Environment base-class wants the platform name string and not the
+      # pex.platform.Platform object.
+      platform=platform_name,
       **kw
     )
     self._supported_tags.extend(platform.supported_tags(self._interpreter))
diff --git a/pex/resolver.py b/pex/resolver.py
index c2ac8aee4..68955807f 100644
--- a/pex/resolver.py
+++ b/pex/resolver.py
@@ -174,8 +174,9 @@ def _expand_and_maybe_adjust_platform(interpreter, platform=None):
       # IE: Say we're on OSX and platform was 'linux-x86_64' or 'linux_x86_64-cp-27-cp27mu'.
       return given_platform
 
-    ii = interpreter.identity
-    if (ii.abbr_impl, ii.impl_ver, ii.abi_tag) == (cur_plat.impl, cur_plat.version, cur_plat.abi):
+    if (interpreter.identity.abbr_impl,
+        interpreter.identity.impl_ver,
+        interpreter.identity.abi_tag) == (cur_plat.impl, cur_plat.version, cur_plat.abi):
       # IE: Say we're on Linux and platform was 'current' or 'linux-x86_64' or
       # 'linux_x86_64-cp-27-cp27mu'and the current extended platform info matches the given
       # interpreter exactly.
@@ -184,9 +185,9 @@ def _expand_and_maybe_adjust_platform(interpreter, platform=None):
     # Otherwise we need to adjust the platform to match a local interpreter different from the
     # currently executing interpreter.
     adjusted_platform = Platform(platform=cur_plat.platform,
-                                 impl=ii.abbr_impl,
-                                 version=ii.impl_ver,
-                                 abi=ii.abi_tag)
+                                 impl=interpreter.identity.abbr_impl,
+                                 version=interpreter.identity.impl_ver,
+                                 abi=interpreter.identity.abi_tag)
 
     TRACER.log("""
   Modifying given platform of {given_platform!r}: