diff --git a/pandas/tests/indexes/test_base.py b/pandas/tests/indexes/test_base.py
index b839ed6331457..27413edcb3701 100644
--- a/pandas/tests/indexes/test_base.py
+++ b/pandas/tests/indexes/test_base.py
@@ -913,7 +913,16 @@ def test_summary(self):
     def test_format(self):
         self._check_method_works(Index.format)
 
-        index = Index([datetime.now()])
+        # GH 14626
+        def datetime_now_without_trailing_zeros():
+            now = datetime.now()
+
+            while str(now).endswith("000"):
+                now = datetime.now()
+
+            return now
+
+        index = Index([datetime_now_without_trailing_zeros()])
 
         # windows has different precision on datetime.datetime.now (it doesn't
         # include us since the default for Timestamp shows these but Index