diff --git a/lib/core/settings.py b/lib/core/settings.py
index 085bdca52..9d0701ee2 100644
--- a/lib/core/settings.py
+++ b/lib/core/settings.py
@@ -303,4 +303,4 @@ HASH_MOD_ITEM_DISPLAY = 1117
 MAX_INT = sys.maxint
 
 # Parameters to be ignored in detection phase
-IGNORE_PARAMETERS = ("__VIEWSTATE", "__EVENTARGUMENT", "__EVENTTARGET", "__EVENTVALIDATION", "PHPSESSID")
+IGNORE_PARAMETERS = ("__VIEWSTATE", "__EVENTARGUMENT", "__EVENTTARGET", "__EVENTVALIDATION")