diff --git a/app/api/routes/resource_modification.py b/app/api/routes/resource_modification.py
index 4e6205cf..7b82c418 100644
--- a/app/api/routes/resource_modification.py
+++ b/app/api/routes/resource_modification.py
@@ -45,7 +45,7 @@ def update_resource(id, json, db):
     try:
         logger.info(
             f"Updating resource. Old data: {json_module.dumps(resource.serialize)}")
-        if json.get('languages'):
+        if json.get('languages') is not None:
             resource.languages = langs
             index_object['languages'] = resource.serialize['languages']
         if json.get('category'):
diff --git a/tests/unit/test_routes/helpers.py b/tests/unit/test_routes/helpers.py
index d3065ed7..ea6f5ea9 100644
--- a/tests/unit/test_routes/helpers.py
+++ b/tests/unit/test_routes/helpers.py
@@ -45,7 +45,7 @@ def update_resource(client,
                             name="New name" if not name else name,
                             url="https://new.url" if not url else url,
                             category="New Category" if not category else category,
-                            languages=["New language"] if not languages else languages,
+                            languages=["New Lang"] if languages is None else languages,
                             free=False if not free else free,
                             notes="New notes" if not notes else notes),
                       headers={'x-apikey': apikey} if not headers else headers)
diff --git a/tests/unit/test_routes/test_resource_update.py b/tests/unit/test_routes/test_resource_update.py
index be0708ae..96085a6e 100644
--- a/tests/unit/test_routes/test_resource_update.py
+++ b/tests/unit/test_routes/test_resource_update.py
@@ -240,6 +240,11 @@ def test_update_resource(
                                notes)
     assert (response.status_code == 200)
 
+    # Empty languages list given removes all languages of resource
+    response = update_resource(client, apikey, languages=[])
+    assert (response.status_code == 200)
+    assert (response.json['resource'].get('languages') == [])
+
     # Resource not found
     response = client.put("/api/v1/resources/0",
                           json=dict(name="New name"),