diff --git a/odoo/models.py b/odoo/models.py
index 23067ad455acd..9450b1af28591 100644
--- a/odoo/models.py
+++ b/odoo/models.py
@@ -4937,6 +4937,17 @@ def onchange(self, values, field_name, field_onchange):
         if not all(name in self._fields for name in names):
             return {}
 
+        # filter out keys in field_onchange that do not refer to actual fields
+        dotnames = []
+        for dotname in field_onchange:
+            try:
+                model = self.browse()
+                for name in dotname.split('.'):
+                    model = model[name]
+                dotnames.append(dotname)
+            except Exception:
+                pass
+
         # create a new record with values, and attach ``self`` to it
         with env.do_in_onchange():
             record = self.new(values)
@@ -4946,7 +4957,7 @@ def onchange(self, values, field_name, field_onchange):
 
         # load fields on secondary records, to avoid false changes
         with env.do_in_onchange():
-            for dotname in field_onchange:
+            for dotname in dotnames:
                 record.mapped(dotname)
 
         # determine which field(s) should be triggered an onchange
@@ -4980,7 +4991,7 @@ def onchange(self, values, field_name, field_onchange):
                     record._onchange_eval(name, field_onchange[name], result)
 
                 # force re-evaluation of function fields on secondary records
-                for dotname in field_onchange:
+                for dotname in dotnames:
                     record.mapped(dotname)
 
                 # determine which fields have been modified
@@ -4996,7 +5007,7 @@ def onchange(self, values, field_name, field_onchange):
         # determine subfields for field.convert_to_onchange() below
         Tree = lambda: defaultdict(Tree)
         subnames = Tree()
-        for dotname in field_onchange:
+        for dotname in dotnames:
             subtree = subnames
             for name in dotname.split('.'):
                 subtree = subtree[name]