diff --git a/lib/core/option.py b/lib/core/option.py
index 06bc58246..d625cfa47 100644
--- a/lib/core/option.py
+++ b/lib/core/option.py
@@ -1005,6 +1005,7 @@ def __setConfAttributes():
     conf.dbmsConnector    = None
     conf.dbmsHandler      = None
     conf.dumpPath         = None
+    conf.errorComparison  = True
     conf.minMatchBlock    = 8
     conf.dynMarkLength    = 32
     conf.httpHeaders      = []
diff --git a/lib/request/comparison.py b/lib/request/comparison.py
index 2b5b5902c..d2635a9fc 100644
--- a/lib/request/comparison.py
+++ b/lib/request/comparison.py
@@ -100,6 +100,10 @@ def comparison(page, headers=None, getSeqMatcher=False, pageLength=None):
     #elif conf.md5hash is not None:
     #    return conf.md5hash == md5hash(page)
 
+    # In case of an DBMS error page return False
+    elif conf.errorComparison and kb.lastErrorPage and kb.lastErrorPage[0]==kb.lastRequestUID:
+        return False
+
     # If the url is not stable it returns sequence matcher between the
     # first untouched HTTP response page content and this content
     else: