diff --git a/features/data/journals/dayone.dayone/entries/044F3747A38546168B572C2E3F217FA2.doentry b/features/data/journals/dayone.dayone/entries/044F3747A38546168B572C2E3F217FA2.doentry
index 2bb8e3c3..1ac26242 100644
--- a/features/data/journals/dayone.dayone/entries/044F3747A38546168B572C2E3F217FA2.doentry
+++ b/features/data/journals/dayone.dayone/entries/044F3747A38546168B572C2E3F217FA2.doentry
@@ -24,7 +24,7 @@
 	<key>Tags</key>
 	<array>
 		<string>work</string>
-		<string>play</string>
+		<string>PLaY</string>
 	</array>
 	<key>Time Zone</key>
 	<string>America/Los_Angeles</string>
diff --git a/features/regression.feature b/features/regression.feature
index 102566b2..727f7c27 100644
--- a/features/regression.feature
+++ b/features/regression.feature
@@ -69,3 +69,12 @@ Feature: Zapped bugs should stay dead.
 			2014-04-24 09:00 Ran 6.2 miles today in 1:02:03.
 			| I'm feeling sore because I forgot to stretch.
 			"""
+
+    Scenario: DayOne tag searching should work with tags containing a mixture of upper and lower case.
+        # https://github.com/maebert/jrnl/issues/354
+        Given we use the config "dayone.yaml"
+        When we run "jrnl @plAy"
+        Then the output should contain
+            """
+            2013-05-17 11:39 This entry has tags!
+            """
diff --git a/jrnl/DayOneJournal.py b/jrnl/DayOneJournal.py
index 8c5ea427..9e988f78 100644
--- a/jrnl/DayOneJournal.py
+++ b/jrnl/DayOneJournal.py
@@ -50,7 +50,7 @@ class DayOne(Journal.Journal):
                     date = date + timezone.utcoffset(date, is_dst=False)
                     entry = Entry.Entry(self, date, text=dict_entry['Entry Text'], starred=dict_entry["Starred"])
                     entry.uuid = dict_entry["UUID"]
-                    entry._tags = [self.config['tagsymbols'][0] + tag for tag in dict_entry.get("Tags", [])]
+                    entry._tags = [self.config['tagsymbols'][0] + tag.lower() for tag in dict_entry.get("Tags", [])]
 
                     self.entries.append(entry)
         self.sort()