diff --git a/lib/core/target.py b/lib/core/target.py
index 98101d433..6d5dd9622 100644
--- a/lib/core/target.py
+++ b/lib/core/target.py
@@ -327,7 +327,7 @@ def _setRequestParams():
             if httpHeader == HTTP_HEADER.USER_AGENT:
                 conf.parameters[PLACE.USER_AGENT] = urldecode(headerValue)
 
-                condition = any((not conf.testParameter, intersect(conf.testParameter, USER_AGENT_ALIASES)))
+                condition = any((not conf.testParameter, intersect(conf.testParameter, USER_AGENT_ALIASES, True)))
 
                 if condition:
                     conf.paramDict[PLACE.USER_AGENT] = {PLACE.USER_AGENT: headerValue}
@@ -336,7 +336,7 @@ def _setRequestParams():
             elif httpHeader == HTTP_HEADER.REFERER:
                 conf.parameters[PLACE.REFERER] = urldecode(headerValue)
 
-                condition = any((not conf.testParameter, intersect(conf.testParameter, REFERER_ALIASES)))
+                condition = any((not conf.testParameter, intersect(conf.testParameter, REFERER_ALIASES, True)))
 
                 if condition:
                     conf.paramDict[PLACE.REFERER] = {PLACE.REFERER: headerValue}
@@ -345,7 +345,7 @@ def _setRequestParams():
             elif httpHeader == HTTP_HEADER.HOST:
                 conf.parameters[PLACE.HOST] = urldecode(headerValue)
 
-                condition = any((not conf.testParameter, intersect(conf.testParameter, HOST_ALIASES)))
+                condition = any((not conf.testParameter, intersect(conf.testParameter, HOST_ALIASES, True)))
 
                 if condition:
                     conf.paramDict[PLACE.HOST] = {PLACE.HOST: headerValue}