diff --git a/lib/core/agent.py b/lib/core/agent.py
index 4c272739e..143657685 100644
--- a/lib/core/agent.py
+++ b/lib/core/agent.py
@@ -450,7 +450,7 @@ class Agent:
         else:
             return query
 
-        if Backend.getIdentifiedDbms() == DBMS.MYSQL:
+        if Backend.isDbms(DBMS.MYSQL):
             if fieldsExists:
                 concatenatedQuery = concatenatedQuery.replace("SELECT ", "CONCAT('%s'," % kb.misc.start, 1)
                 concatenatedQuery += ",'%s')" % kb.misc.stop
diff --git a/lib/core/common.py b/lib/core/common.py
index c5e0635c5..473a7a981 100644
--- a/lib/core/common.py
+++ b/lib/core/common.py
@@ -421,11 +421,19 @@ class Backend:
     # Comparison methods
     @staticmethod
     def isDbms(dbms):
-        return Backend.getDbms() is not None and Backend.getDbms() == aliasToDbmsEnum(dbms)
+        if Backend.getDbms() is not None:
+            return Backend.getDbms() == aliasToDbmsEnum(dbms)
+        else:
+            return Backend.getIdentifiedDbms() == aliasToDbmsEnum(dbms)
 
     @staticmethod
     def isDbmsWithin(aliases):
-        return Backend.getDbms() is not None and Backend.getDbms().lower() in aliases
+        if Backend.getDbms() is not None:
+            return Backend.getDbms().lower() in aliases
+        elif Backend.getIdentifiedDbms() is not None:
+            return Backend.getIdentifiedDbms().lower() in aliases
+        else:
+            return False
 
     @staticmethod
     def isVersion(version):