diff --git a/Configuration/Applications/python/ConfigBuilder.py b/Configuration/Applications/python/ConfigBuilder.py
index 93fee0bfa558e..c86e271f87c85 100644
--- a/Configuration/Applications/python/ConfigBuilder.py
+++ b/Configuration/Applications/python/ConfigBuilder.py
@@ -2232,7 +2232,7 @@ def prepare(self, doChecking = False):
             self.pythonCfgCode +="process.options.numberOfThreads=cms.untracked.uint32("+self._options.nThreads+")\n"
             self.pythonCfgCode +="process.options.numberOfStreams=cms.untracked.uint32("+self._options.nStreams+")\n"
             self.pythonCfgCode +="process.options.numberOfConcurrentLuminosityBlocks=cms.untracked.uint32("+self._options.nConcurrentLumis+")\n"
-            if self._options.nConcurrentLumis > 1:
+            if int(self._options.nConcurrentLumis) > 1:
               self.pythonCfgCode +="if hasattr(process, 'DQMStore'): process.DQMStore.assertLegacySafe=cms.untracked.bool(False)\n"
             self.process.options.numberOfThreads=cms.untracked.uint32(int(self._options.nThreads))
             self.process.options.numberOfStreams=cms.untracked.uint32(int(self._options.nStreams))