diff --git a/Lib/locale.py b/Lib/locale.py
index c2c7a04b280708..5be44afba0f8e7 100644
--- a/Lib/locale.py
+++ b/Lib/locale.py
@@ -1046,11 +1046,11 @@ def getpreferredencoding(do_setlocale=True):
     'english_united-states':                'en_US.ISO8859-1',
     'english_united-states.437':            'C',
     'english_us':                           'en_US.ISO8859-1',
-    'eo':                                   'eo_XX.ISO8859-3',
+    'eo':                                   'eo.UTF-8',
     'eo.utf8':                              'eo.UTF-8',
-    'eo_eo':                                'eo_EO.ISO8859-3',
-    'eo_us.utf8':                           'eo_US.UTF-8',
-    'eo_xx':                                'eo_XX.ISO8859-3',
+    'eo_eo':                                'eo.UTF-8',
+    'eo_us.utf8':                           'eo.UTF-8',
+    'eo_xx':                                'eo.UTF-8',
     'es':                                   'es_ES.ISO8859-1',
     'es_ar':                                'es_AR.ISO8859-1',
     'es_bo':                                'es_BO.ISO8859-1',
diff --git a/Misc/NEWS.d/next/Library/2020-01-08-03-07-09.bpo-35163.GTirF-.rst b/Misc/NEWS.d/next/Library/2020-01-08-03-07-09.bpo-35163.GTirF-.rst
new file mode 100644
index 00000000000000..21f8dd870c41d6
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2020-01-08-03-07-09.bpo-35163.GTirF-.rst
@@ -0,0 +1,2 @@
+Replaced incorrect Esperanto locales with the only existent glibc locale for
+Esperanto (eo.UTF-8) in the mappings in locale.py.