diff --git a/spacy/tests/regression/test_issue1387.py b/spacy/tests/regression/test_issue1387.py
new file mode 100644
index 000000000..c5f01d145
--- /dev/null
+++ b/spacy/tests/regression/test_issue1387.py
@@ -0,0 +1,22 @@
+# coding: utf-8
+from __future__ import unicode_literals
+
+from ...symbols import POS, VERB, VerbForm_part
+from ...vocab import Vocab
+from ...lemmatizer import Lemmatizer
+from ..util import get_doc
+
+import pytest
+
+def test_issue1387():
+    tag_map = {'VBG': {POS: VERB, VerbForm_part: True}}
+    index = {"verb": ("cope","cop")}
+    exc = {"verb": {"coping": ("cope",)}}
+    rules = {"verb": [["ing", ""]]}
+    lemmatizer = Lemmatizer(index, exc, rules)
+    vocab = Vocab(lemmatizer=lemmatizer, tag_map=tag_map)
+    doc = get_doc(vocab, ["coping"])
+    doc[0].tag_ = 'VBG'
+    assert doc[0].text == "coping"
+    assert doc[0].lemma_ == "cope"
+