diff --git a/analysis/analyzers/render/__init__.py b/analysis/analyzers/render/__init__.py
index aeb6a20..24c4d2d 100644
--- a/analysis/analyzers/render/__init__.py
+++ b/analysis/analyzers/render/__init__.py
@@ -5,7 +5,7 @@ from .. import Result
 class Render:
 	result_types = []
 
-	def render(self, results: List[Result], name=None):
+	def render(self, results: List[Result], name=None) -> [str]:
 		raise NotImplementedError()
 
 	def filter(self, results: List[Result]):
diff --git a/analysis/analyzers/render/biogames.py b/analysis/analyzers/render/biogames.py
index 16e8b63..53c12c4 100644
--- a/analysis/analyzers/render/biogames.py
+++ b/analysis/analyzers/render/biogames.py
@@ -135,16 +135,16 @@ class BoardDurationHistRender(Render):
 class BoardDurationBoxRender(Render):
 	result_types = [BoardDurationAnalyzer]
 
-	def render(self, results: List[Result], name=None):
+	def render(self, results: List[Result], name=None) -> [str]:
 		data = defaultdict(list)
 		for result in self.filter(results):
-			get = result.get()
-			for board in get:
+			for board in result.get():
 				duration = board['active'] if 'active' in board else 0
 				data[board['id']].append(duration)
 		data_tuples = [(key, data[key]) for key in sorted(data)]
 		data_tuples = sorted(data_tuples, key=lambda x: sum(x[1]))
-		plot(data_tuples)
+		plot(data_tuples, name=name)
+		return [name]
 
 
 class ActivityMapperRender(Render):
diff --git a/docker-compose.yml b/docker-compose.yml
index 9a91058..ba49ee1 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,4 +1,4 @@
-version: "2.2"
+version: "3"
 
 services:
  app:
@@ -10,6 +10,7 @@ services:
   command: python3 webserver.py
   environment:
     - PYTHONPATH=/app
+    - PYTHONUNBUFFERED=1
   networks:
    - default
    - traefik_net
@@ -23,6 +24,7 @@ services:
   image: docker.clkl.de/ma/celery:0.4.1
   environment:
     - PYTHONPATH=/app
+    - PYTHONUNBUFFERED=1
   volumes:
     - ./:/app
     - ./data/results:/data/results