diff --git a/meshroom/core/__init__.py b/meshroom/core/__init__.py
index 1623ee0e..148b6119 100644
--- a/meshroom/core/__init__.py
+++ b/meshroom/core/__init__.py
@@ -310,7 +310,6 @@ def registerNodeType(nodeType):
 
     After registration, nodes of this type can be instantiated in a Graph.
     """
-    global nodesDesc
     if nodeType.__name__ in nodesDesc:
         logging.error(f"Node Desc {nodeType.__name__} is already registered.")
     nodesDesc[nodeType.__name__] = nodeType
@@ -318,7 +317,6 @@ def registerNodeType(nodeType):
 
 def unregisterNodeType(nodeType):
     """ Remove 'nodeType' from the list of register node types. """
-    global nodesDesc
     assert nodeType.__name__ in nodesDesc
     del nodesDesc[nodeType.__name__]
 
@@ -332,7 +330,6 @@ def loadNodes(folder, packageName):
 
 
 def loadAllNodes(folder):
-    global nodesDesc
     for importer, package, ispkg in pkgutil.walk_packages([folder]):
         if ispkg:
             nodeTypes = loadNodes(folder, package)
@@ -372,7 +369,6 @@ def loadPluginsFolder(folder):
 
 
 def registerSubmitter(s):
-    global submitters
     if s.name in submitters:
         logging.error(f"Submitter {s.name} is already registered.")
     submitters[s.name] = s
@@ -387,7 +383,6 @@ def loadSubmitters(folder, packageName):
 
 
 def loadPipelineTemplates(folder):
-    global pipelineTemplates
     if not os.path.isdir(folder):
         logging.error(f"Pipeline templates folder '{folder}' does not exist.")
         return
diff --git a/meshroom/core/node.py b/meshroom/core/node.py
index 89b1328f..27f00e38 100644
--- a/meshroom/core/node.py
+++ b/meshroom/core/node.py
@@ -298,12 +298,11 @@ class LogManager:
             return logging.NOTSET
 
 
-runningProcesses = {}
+runningProcesses: dict[str, "NodeChunk"] = {}
 
 
 @atexit.register
 def clearProcessesStatus():
-    global runningProcesses
     for k, v in runningProcesses.items():
         v.upgradeStatusTo(Status.KILLED)
 
@@ -474,7 +473,6 @@ class NodeChunk(BaseObject):
             self._processInIsolatedEnvironment()
             return
 
-        global runningProcesses
         runningProcesses[self.name] = self
         self._status.setNode(self.node)
         self._status.initStartCompute()