diff --git a/spacy/tests/tokenizer/conftest.py b/spacy/tests/tokenizer/conftest.py
index 2f1d65e99..8d842cd6d 100644
--- a/spacy/tests/tokenizer/conftest.py
+++ b/spacy/tests/tokenizer/conftest.py
@@ -1,3 +1,6 @@
+# coding: utf-8
+from __future__ import unicode_literals
+
 import pytest
 from ...en import English
 
diff --git a/spacy/tests/tokenizer/test_contractions.py b/spacy/tests/tokenizer/test_contractions.py
index d8c0b0c79..f2c6ee37a 100644
--- a/spacy/tests/tokenizer/test_contractions.py
+++ b/spacy/tests/tokenizer/test_contractions.py
@@ -1,3 +1,4 @@
+# coding: utf-8
 from __future__ import unicode_literals
 
 import pytest
diff --git a/spacy/tests/tokenizer/test_indices.py b/spacy/tests/tokenizer/test_indices.py
index 5df7bcc59..5a0dea627 100644
--- a/spacy/tests/tokenizer/test_indices.py
+++ b/spacy/tests/tokenizer/test_indices.py
@@ -1,3 +1,4 @@
+# coding: utf-8
 """Test that token.idx correctly computes index into the original string."""
 
 from __future__ import unicode_literals
diff --git a/spacy/tests/tokenizer/test_punct.py b/spacy/tests/tokenizer/test_punct.py
index d238e593e..06ff0cc8b 100644
--- a/spacy/tests/tokenizer/test_punct.py
+++ b/spacy/tests/tokenizer/test_punct.py
@@ -1,3 +1,4 @@
+# coding: utf-8
 from __future__ import unicode_literals
 
 import pytest
diff --git a/spacy/tests/tokenizer/test_whitespace.py b/spacy/tests/tokenizer/test_whitespace.py
index 8ba138b0c..9dd3a19a1 100644
--- a/spacy/tests/tokenizer/test_whitespace.py
+++ b/spacy/tests/tokenizer/test_whitespace.py
@@ -1,3 +1,4 @@
+# coding: utf-8
 """Test that tokens are created correctly for whitespace."""