diff --git a/tests/pytest/util/dnodes.py b/tests/pytest/util/dnodes.py
index 235e4d25e020296a7c8b02cb6db96aaca0aec548..b45e5b96c3217870e843b268695361b4b5d7de5d 100644
--- a/tests/pytest/util/dnodes.py
+++ b/tests/pytest/util/dnodes.py
@@ -231,7 +231,7 @@ class TDDnode:
         # self.cfg("logDir",self.logDir)
         # print(updatecfgDict)
         isFirstDir = 1
-        if updatecfgDict[0] and updatecfgDict[0][0]:
+        if bool(updatecfgDict) and updatecfgDict[0] and updatecfgDict[0][0]:
             print(updatecfgDict[0][0])
             for key,value in updatecfgDict[0][0].items():
                 if value == 'dataDir' :