diff --git a/lib/core/common.py b/lib/core/common.py
index 81a335846..d29714d51 100644
--- a/lib/core/common.py
+++ b/lib/core/common.py
@@ -1945,7 +1945,7 @@ def initTechnique(technique=None):
 
             # Restoring stored conf options
             for key, value in kb.injection.conf.items():
-                if value and (not hasattr(conf, key) or (hasattr(conf, key) and getattr(conf, key) in ("", None))):
+                if value and (not hasattr(conf, key) or (hasattr(conf, key) and not getattr(conf, key))):
                     setattr(conf, key, value)
                     debugMsg = "resuming configuration option '%s' (%s)" % (key, value)
                     logger.debug(debugMsg)