diff --git a/CHANGES.rst b/CHANGES.rst
index e3af10bd20..774fefa9c2 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -36,6 +36,11 @@ gaia
 - New method cross_match_basic that simplifies the positional x-match method [#3320]
 - new DR4 datalink retrieve type MEAN_SPECTRUM_RVS [#3342]
 
+jplhorizons
+^^^^^^^^^^^
+
+- Fixed incorrect ``refplane`` parameter value: the API did not accept ``BODY EQUATOR`` but required ``BODY``. [#3370]
+
 linelists.cdms
 ^^^^^^^^^^^^^^
 
diff --git a/astroquery/jplhorizons/core.py b/astroquery/jplhorizons/core.py
index 34bf0f9f06..1cd68267b1 100644
--- a/astroquery/jplhorizons/core.py
+++ b/astroquery/jplhorizons/core.py
@@ -906,7 +906,7 @@ def elements_async(self, *, get_query_payload=False,
             ('OBJ_DATA', 'YES'),
             ('REF_SYSTEM', refsystem),
             ('REF_PLANE', {'ecliptic': 'ECLIPTIC', 'earth': 'FRAME',
-                           'body': "'BODY EQUATOR'"}[refplane]),
+                           'body': 'BODY'}[refplane]),
             ('TP_TYPE', {'absolute': 'ABSOLUTE',
                          'relative': 'RELATIVE'}[tp_type])])
 
@@ -1149,7 +1149,7 @@ def vectors_async(self, *, get_query_payload=False,
             ('REF_PLANE', {'ecliptic': 'ECLIPTIC',
                            'earth': 'FRAME',
                            'frame': 'FRAME',
-                           'body': "'BODY EQUATOR'"}[refplane]),
+                           'body': 'BODY'}[refplane]),
             ('REF_SYSTEM', 'ICRF'),
             ('TP_TYPE', 'ABSOLUTE'),
             ('VEC_LABELS', 'YES'),