diff --git a/meshroom/__init__.py b/meshroom/__init__.py
index 7bda50a187..e2847226a3 100644
--- a/meshroom/__init__.py
+++ b/meshroom/__init__.py
@@ -1,10 +1,11 @@
 __version__ = "2019.2.0"
 __version_name__ = __version__
 
+from distutils import util
+from enum import Enum
+import logging
 import os
 import sys
-import logging
-from enum import Enum
 
 # sys.frozen is initialized by cx_Freeze and identifies a release package
 isFrozen = getattr(sys, "frozen", False)
@@ -21,6 +22,8 @@
 # Allow override from env variable
 __version_name__ = os.environ.get("REZ_MESHROOM_VERSION", __version_name__)
 
+useMultiChunks = util.strtobool(os.environ.get("MESHROOM_USE_MULTI_CHUNKS", "True"))
+
 
 class Backend(Enum):
     STANDALONE = 1
diff --git a/meshroom/core/desc.py b/meshroom/core/desc.py
index be6f52e589..07466d15f7 100755
--- a/meshroom/core/desc.py
+++ b/meshroom/core/desc.py
@@ -429,7 +429,7 @@ def buildCommandLine(self, chunk):
             if not alreadyInEnv:
                 cmdPrefix = '{rez} {packageFullName} -- '.format(rez=os.environ.get('REZ_ENV'), packageFullName=chunk.node.packageFullName)
         cmdSuffix = ''
-        if chunk.range:
+        if chunk.node.isParallelized:
             cmdSuffix = ' ' + self.commandLineRange.format(**chunk.range.toDict())
         return cmdPrefix + chunk.node.nodeDesc.commandLine.format(**chunk.node._cmdVars) + cmdSuffix
 
diff --git a/meshroom/core/node.py b/meshroom/core/node.py
index 3865b6d520..0eeb13d402 100644
--- a/meshroom/core/node.py
+++ b/meshroom/core/node.py
@@ -592,7 +592,7 @@ def _buildCmdVars(self):
 
     @property
     def isParallelized(self):
-        return bool(self.nodeDesc.parallelization)
+        return bool(self.nodeDesc.parallelization) if meshroom.useMultiChunks else False
 
     @property
     def nbParallelizationBlocks(self):