diff --git a/PKG-INFO b/PKG-INFO
index 2282411c55d84afaa0ac425840165bc81dae41b9..64ed44f8f32dc0cb9953114500fccbd427a067c6 100644
--- a/PKG-INFO
+++ b/PKG-INFO
@@ -1,6 +1,6 @@
 Metadata-Version: 2.1
 Name: swh.deposit
-Version: 1.4.2
+Version: 1.4.3
 Summary: Software Heritage Deposit Server
 Home-page: https://forge.softwareheritage.org/source/swh-deposit/
 Author: Software Heritage developers
diff --git a/swh.deposit.egg-info/PKG-INFO b/swh.deposit.egg-info/PKG-INFO
index 2282411c55d84afaa0ac425840165bc81dae41b9..64ed44f8f32dc0cb9953114500fccbd427a067c6 100644
--- a/swh.deposit.egg-info/PKG-INFO
+++ b/swh.deposit.egg-info/PKG-INFO
@@ -1,6 +1,6 @@
 Metadata-Version: 2.1
 Name: swh.deposit
-Version: 1.4.2
+Version: 1.4.3
 Summary: Software Heritage Deposit Server
 Home-page: https://forge.softwareheritage.org/source/swh-deposit/
 Author: Software Heritage developers
diff --git a/swh/deposit/settings/production.py b/swh/deposit/settings/production.py
index 61b5ee6065b9f082f95076b136cb1f35a54c1387..33e1d0639ac6a4289e2ad0a3f469bb2550403cfd 100644
--- a/swh/deposit/settings/production.py
+++ b/swh/deposit/settings/production.py
@@ -134,7 +134,10 @@ if cfg_azure:
     object_parameters = {}
     for optional_config_key in ["content_type", "content_disposition"]:
         if optional_config_key in cfg_azure:
-            object_parameters[optional_config_key] = cfg_azure[optional_config_key]
+            value = cfg_azure[optional_config_key]
+            # Explicit "" as None instead of empty string which is not interpreted
+            # correctly
+            object_parameters[optional_config_key] = None if not value else value
 
     options.update(dict(object_parameters=object_parameters))