diff --git a/lib/core/target.py b/lib/core/target.py
index fe887b414..b8c9e02da 100644
--- a/lib/core/target.py
+++ b/lib/core/target.py
@@ -290,7 +290,7 @@ def initTargetEnv():
         kb.dbms           = None
         kb.dbmsDetected   = False
         kb.dbmsVersion    = [ "Unknown" ]
-        kb.htmlFp         = None
+        kb.htmlFp         = []
         kb.lastErrorPage  = None
         kb.injParameter   = None
         kb.injPlace       = None