diff --git a/spacy/pipeline/entityruler.py b/spacy/pipeline/entityruler.py
index 35fefd02c..9bbbb2c48 100644
--- a/spacy/pipeline/entityruler.py
+++ b/spacy/pipeline/entityruler.py
@@ -266,8 +266,9 @@ class EntityRuler(object):
         DOCS: https://spacy.io/api/entityruler#from_disk
         """
         path = ensure_path(path)
-        if path.is_file():
-            patterns = srsly.read_jsonl(path)
+        depr_patterns_path = path.with_suffix(".jsonl")
+        if depr_patterns_path.is_file():
+            patterns = srsly.read_jsonl(depr_patterns_path)
             self.add_patterns(patterns)
         else:
             cfg = {}
diff --git a/spacy/tests/regression/test_issue3526.py b/spacy/tests/regression/test_issue3526.py
index 62c9d5532..c6f513730 100644
--- a/spacy/tests/regression/test_issue3526.py
+++ b/spacy/tests/regression/test_issue3526.py
@@ -62,10 +62,9 @@ def test_entity_ruler_from_disk_old_format_safe(patterns, en_vocab):
     nlp = Language(vocab=en_vocab)
     ruler = EntityRuler(nlp, patterns=patterns, overwrite_ents=True)
     with make_tempdir() as tmpdir:
-        out_file = tmpdir / "entity_ruler.jsonl"
-        srsly.write_jsonl(out_file, ruler.patterns)
-        new_ruler = EntityRuler(nlp)
-        new_ruler = new_ruler.from_disk(out_file)
+        out_file = tmpdir / "entity_ruler"
+        srsly.write_jsonl(out_file.with_suffix(".jsonl"), ruler.patterns)
+        new_ruler = EntityRuler(nlp).from_disk(out_file)
         for pattern in ruler.patterns:
             assert pattern in new_ruler.patterns
         assert len(new_ruler) == len(ruler)