diff --git a/Misc/NEWS b/Misc/NEWS
index 022e897..f5428bd 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -150,6 +150,9 @@
 Library
 -------
 
+- Issue #1602133: on Mac OS X a shared library build (``--enable-shared``)
+  now fills the ``os.environ`` variable correctly.
+
 - Issue #9290: In IDLE the sys.std* streams now implement io.TextIOBase
   interface and support all mandatory methods and properties.
 
diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
index 90838c9..40645ea 100644
--- a/Modules/posixmodule.c
+++ b/Modules/posixmodule.c
@@ -955,9 +955,10 @@
 #endif /* MS_WINDOWS */
 
 /* Return a dictionary corresponding to the POSIX environment table */
-#ifdef WITH_NEXT_FRAMEWORK
+#if defined(WITH_NEXT_FRAMEWORK) || (defined(__APPLE__) && defined(Py_ENABLE_SHARED))
 /* On Darwin/MacOSX a shared library or framework has no access to
-** environ directly, we must obtain it with _NSGetEnviron().
+** environ directly, we must obtain it with _NSGetEnviron(). See also
+** man environ(7).
 */
 #include <crt_externs.h>
 static char **environ;
@@ -982,7 +983,7 @@
     d = PyDict_New();
     if (d == NULL)
         return NULL;
-#ifdef WITH_NEXT_FRAMEWORK
+#if defined(WITH_NEXT_FRAMEWORK) || (defined(__APPLE__) && defined(Py_ENABLE_SHARED))
     if (environ == NULL)
         environ = *_NSGetEnviron();
 #endif