diff --git a/glare/engine.py b/glare/engine.py
index 813d496..797774f 100644
--- a/glare/engine.py
+++ b/glare/engine.py
@@ -565,9 +565,14 @@ class Engine(object):
             policy.authorize(action_name, af.to_dict(), context)
 
             # create an an empty blob instance in db with 'saving' status
-            if self._get_blob_info(af, field_name, blob_key):
-                msg = _("Blob %(blob)s already exists for artifact "
-                        "%(af)s") % {'blob': field_name, 'af': af.id}
+            existing_blob = self._get_blob_info(af, field_name, blob_key)
+            existing_blob_status = existing_blob.get("status")\
+                if existing_blob else None
+            if existing_blob_status == "saving":
+                msg = _("Blob %(blob)s already exists for artifact and it"
+                        "is in %(status) %(af)s") % {
+                    'blob': field_name, 'af': af.id,
+                    'status': existing_blob_status}
                 raise exception.Conflict(message=msg)
             utils.validate_change_allowed(af, field_name)
             blob_info['size'] = self._calculate_allowed_space(
diff --git a/glare/tests/functional/test_database_store.py b/glare/tests/functional/test_database_store.py
index c5bf089..6141824 100644
--- a/glare/tests/functional/test_database_store.py
+++ b/glare/tests/functional/test_database_store.py
@@ -116,13 +116,13 @@ default_store = database
         self.assertNotIn('id', art['blob'])
 
         # reUpload file to artifact
-        self.put(url=url + '/blob', data=data, status=409,
+        self.put(url=url + '/blob', data=data, status=200,
                  headers=headers)
         # upload blob dict
         self.put(url + '/dict_of_blobs/test_key', data=data, headers=headers)
-        # test re-upload failed
+        # test re-upload for dict of blob
         self.put(url + '/dict_of_blobs/test_key', data=data, headers=headers,
-                 status=409)
+                 status=200)
 
         # upload few other blobs to the dict
         for elem in ('aaa', 'bbb', 'ccc', 'ddd'):
diff --git a/glare/tests/functional/test_sample_artifact.py b/glare/tests/functional/test_sample_artifact.py
index 06ad15b..a72e8e0 100644
--- a/glare/tests/functional/test_sample_artifact.py
+++ b/glare/tests/functional/test_sample_artifact.py
@@ -745,13 +745,13 @@ class TestBlobs(base.TestArtifact):
         self.assertEqual(exp_blob_url, art['blob']['url'])
 
         # reUpload file to artifact
-        self.put(url=url + '/blob', data=data, status=409,
+        self.put(url=url + '/blob', data=data, status=200,
                  headers=headers)
         # upload blob dict
         self.put(url + '/dict_of_blobs/test_key', data=data, headers=headers)
-        # test re-upload failed
+        # test re-upload for dict of blob.
         self.put(url + '/dict_of_blobs/test_key', data=data, headers=headers,
-                 status=409)
+                 status=200)
 
         # upload few other blobs to the dict
         for elem in ('aaa', 'bbb', 'ccc', 'ddd'):
diff --git a/glare/tests/unit/api/test_upload.py b/glare/tests/unit/api/test_upload.py
index 9ea2461..e2f7ffd 100644
--- a/glare/tests/unit/api/test_upload.py
+++ b/glare/tests/unit/api/test_upload.py
@@ -57,11 +57,14 @@ class TestArtifactUpload(base.BaseTestArtifactAPI):
         self.assertEqual(3, artifact['blob']['size'])
         self.assertEqual('active', artifact['blob']['status'])
 
-        # Re-uploading blob leads to Conflict error
-        self.assertRaises(
-            exc.Conflict, self.controller.upload_blob,
+        # Re-uploading blob
+        self.controller.upload_blob(
             self.req, 'sample_artifact', self.sample_artifact['id'], 'blob',
-            BytesIO(b'aaa'), 'application/octet-stream')
+            BytesIO(b'aaabb'), 'application/octet-stream')
+        artifact = self.controller.show(self.req, 'sample_artifact',
+                                        self.sample_artifact['id'])
+        self.assertEqual(5, artifact['blob']['size'])
+        self.assertEqual('active', artifact['blob']['status'])
 
     def test_upload_saving_blob(self):
         self.controller.upload_blob(
@@ -232,11 +235,15 @@ class TestArtifactUpload(base.BaseTestArtifactAPI):
         self.assertEqual(3, artifact['dict_of_blobs']['blb']['size'])
         self.assertEqual('active', artifact['dict_of_blobs']['blb']['status'])
 
-        # If blob key already exists Glare return Conflict error
-        self.assertRaises(
-            exc.Conflict, self.controller.upload_blob,
+        # Validate re-uploaded of blob content.
+        self.controller.upload_blob(
             self.req, 'sample_artifact', self.sample_artifact['id'],
-            'dict_of_blobs/blb', BytesIO(b'aaa'), 'application/octet-stream')
+            'dict_of_blobs/blb', BytesIO(b'aaabb'),
+            'application/octet-stream')
+
+        artifact = self.controller.show(self.req, 'sample_artifact',
+                                        self.sample_artifact['id'])
+        self.assertEqual(5, artifact['dict_of_blobs']['blb']['size'])
 
     def test_blob_dict_storage_error(self):
         self.config(default_store='filesystem',