2 files changed, 4 insertions, 2 deletions
diff --git a/py-fake-service/app/adapter/tag.py b/py-fake-service/app/adapter/tag.py
index a0f3ec1b..bc5bee95 100644
--- a/py-fake-service/app/adapter/tag.py
+++ b/py-fake-service/app/adapter/tag.py
@@ -10,7 +10,7 @@ class Tag:
         }   
 
         self.ident = ident
-        self.name = name
+        self.name = name.lower()
         self.default = name in self.DEFAULT_TAGS
 
     def increment_count(self):
diff --git a/py-fake-service/app/adapter/tagsset.py b/py-fake-service/app/adapter/tagsset.py
index 803c921c..67f4379d 100644
--- a/py-fake-service/app/adapter/tagsset.py
+++ b/py-fake-service/app/adapter/tagsset.py
@@ -16,6 +16,7 @@ class TagsSet:
 
     def mark_as_read(self, tags):
         for tag in tags:
+            tag = tag.lower()
             tag = self.tags.get(tag)
             tag.increment_read()
 
@@ -30,7 +31,8 @@ class TagsSet:
         self.tags.get(tag).decrement_count()
 
     def _create_new_tag(self, tag):
-        tag = self.tags.setdefault(tag, Tag(tag, self.ident))
+        tag = Tag(tag, self.ident)
+        tag = self.tags.setdefault(tag.name, tag)
         self.ident += 1
         return tag