diff --git a/translate/google/cloud/translate_v2/client.py b/translate/google/cloud/translate_v2/client.py
index 46705bd7513a..c3cbe58eb967 100644
--- a/translate/google/cloud/translate_v2/client.py
+++ b/translate/google/cloud/translate_v2/client.py
@@ -103,7 +103,7 @@ def detect_language(self, values):
         :param values: String or list of strings that will have
                        language detected.
 
-        :rtype: str or list
+        :rtype: dict or list
         :returns: A list of dictionaries for each queried value. Each
                   dictionary typically contains three keys