diff --git a/lib/controller/checks.py b/lib/controller/checks.py
index 1c721c8c5..e8dc5b6da 100644
--- a/lib/controller/checks.py
+++ b/lib/controller/checks.py
@@ -147,6 +147,8 @@ def checkDynParam(place, parameter, value):
     dynamicity might depend on another parameter.
     """
 
+    conf.matchRatio = None
+
     infoMsg = "testing if %s parameter '%s' is dynamic" % (place, parameter)
     logger.info(infoMsg)
 
diff --git a/lib/controller/controller.py b/lib/controller/controller.py
index 143beceee..2d50e81ec 100644
--- a/lib/controller/controller.py
+++ b/lib/controller/controller.py
@@ -227,8 +227,6 @@ def start():
                         testSqlInj = True
                         paramKey = (conf.hostname, conf.path, place, parameter)
 
-                        conf.matchRatio = None
-
                         if paramKey in kb.testedParams:
                             testSqlInj = False