diff --git a/lib/controller/checks.py b/lib/controller/checks.py
index f9dd0bfd4..8bf476295 100644
--- a/lib/controller/checks.py
+++ b/lib/controller/checks.py
@@ -89,8 +89,7 @@ def checkSqlInjection(place, parameter, value):
     # Set the flag for sql injection test mode
     kb.testMode = True
 
-    #for test in getInjectionTests():
-    for test in conf.tests:
+    for test in getInjectionTests():
         try:
             if kb.endDetection:
                 break
diff --git a/lib/core/common.py b/lib/core/common.py
index 900bfe6ee..7f14316c5 100644
--- a/lib/core/common.py
+++ b/lib/core/common.py
@@ -1974,7 +1974,9 @@ def getInjectionTests():
 
     def priorityFunction(test):
         retVal = 0
-        if 'details' in test and 'dbms' in test.details:
+        if test.stype == PAYLOAD.TECHNIQUE.UNION:
+            retVal = 3
+        elif 'details' in test and 'dbms' in test.details:
             if test.details.dbms in getErrorParsedDBMSes():
                 retVal = 1
             else: