diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index 90c359dfd124..a61c81dde5e1 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -5,6 +5,8 @@ CHANGELOG
 Next Release (TBD)
 ==================
 
+* bugfix:``aws s3 sync``: Fix issue when uploading with ``--exact-timestamps``
+  (`issue 964 <https://github.com/aws/aws-cli/pull/964>`__)
 * bugfix:Retry: Fix issue where certain error codes were not being retried
   (`botocore issue 361 <https://github.com/boto/botocore/pull/361>`__)
 * bugfix:``aws emr ssh``: Fix issue when using waiter interface to
diff --git a/awscli/customizations/s3/syncstrategy/exacttimestamps.py b/awscli/customizations/s3/syncstrategy/exacttimestamps.py
index 599341ed14b0..a843178050ff 100644
--- a/awscli/customizations/s3/syncstrategy/exacttimestamps.py
+++ b/awscli/customizations/s3/syncstrategy/exacttimestamps.py
@@ -50,5 +50,5 @@ def compare_time(self, src_file, dest_file):
         if cmd == 'download':
             return self.total_seconds(delta) == 0
         else:
-            return super(SizeOnlySyncStrategy, self).compare_time(src_file,
-                                                                  dest_file)
+            return super(ExactTimestampsSync, self).compare_time(src_file,
+                                                                 dest_file)
diff --git a/tests/unit/customizations/s3/syncstrategy/test_exacttimestamps.py b/tests/unit/customizations/s3/syncstrategy/test_exacttimestamps.py
index 480f5de25e91..4ec5ba484fe5 100644
--- a/tests/unit/customizations/s3/syncstrategy/test_exacttimestamps.py
+++ b/tests/unit/customizations/s3/syncstrategy/test_exacttimestamps.py
@@ -113,6 +113,29 @@ def test_compare_exact_timestamps_same_age_diff_size(self):
             src_file, dst_file)
         self.assertTrue(should_sync)
 
+    def test_compare_exact_timestamps_diff_age_not_download(self):
+        """
+        Confirm that same sized files are synced when the timestamps differ,
+        the type of operation is not a download, and ``exact_timestamps``
+        is set.
+        """
+        time_src = datetime.datetime.now()
+        time_dst = time_src - datetime.timedelta(days=1)
+
+        src_file = FileStat(src='', dest='',
+                            compare_key='test.py', size=10,
+                            last_update=time_src, src_type='s3',
+                            dest_type='local', operation_name='upload')
+
+        dst_file = FileStat(src='', dest='',
+                            compare_key='test.py', size=10,
+                            last_update=time_dst, src_type='local',
+                            dest_type='s3', operation_name='')
+
+        should_sync = self.sync_strategy.determine_should_sync(
+            src_file, dst_file)
+        self.assertTrue(should_sync)
+
 
 if __name__ == "__main__":
     unittest.main()