diff --git a/spacy/lang/fr/lemmatizer/lemmatizer.py b/spacy/lang/fr/lemmatizer/lemmatizer.py
index 4103fdfd2..e572f84a0 100644
--- a/spacy/lang/fr/lemmatizer/lemmatizer.py
+++ b/spacy/lang/fr/lemmatizer/lemmatizer.py
@@ -131,7 +131,7 @@ def lemmatize(string, index, exceptions, rules):
     if not forms:
         forms.extend(oov_forms)
     if not forms and string in LOOKUP.keys():
-        forms.append(LOOKUP[string])
+        forms.append(LOOKUP[string][0])
     if not forms:
         forms.append(string)
     return list(set(forms))
diff --git a/spacy/tests/regression/test_issue3178.py b/spacy/tests/regression/test_issue3178.py
new file mode 100644
index 000000000..fb07f5c03
--- /dev/null
+++ b/spacy/tests/regression/test_issue3178.py
@@ -0,0 +1,10 @@
+from __future__ import unicode_literals
+import pytest
+import spacy
+
+
+@pytest.mark.models('fr')
+def test_issue1959(FR):
+    texts = ['Je suis la mauvaise herbe', "Me, myself and moi"]
+    for text in texts:
+        FR(text)