diff --git a/lib/techniques/union/use.py b/lib/techniques/union/use.py
index 0158e9cc8..e2a14a1ab 100644
--- a/lib/techniques/union/use.py
+++ b/lib/techniques/union/use.py
@@ -251,7 +251,7 @@ def unionUse(expression, unpack=True, dump=False):
                     infoMsg += "%d entries" % stopLimit
                     logger.info(infoMsg)
 
-            elif not isinstance(count, basestring) or count and not count.isdigit():
+            elif count and (not isinstance(count, basestring) or not count.isdigit()):
                 warnMsg = "it was not possible to count the number "
                 warnMsg += "of entries for the SQL query provided. "
                 warnMsg += "sqlmap will assume that it returns only "