diff --git a/vitables/nodeprops/attrpropdlg.py b/vitables/nodeprops/attrpropdlg.py
index d2b7a9ca..3b67a150 100644
--- a/vitables/nodeprops/attrpropdlg.py
+++ b/vitables/nodeprops/attrpropdlg.py
@@ -133,7 +133,7 @@ def fillSysAttrsPage(self, info):
             # isinstance(asi.test, int) returns True
             # asi.test.shape returns ()
             # asi.test2 = "hello" ->
-            # type(asi.test2) returns numpy.string_
+            # type(asi.test2) returns numpy.bytes_
             # isinstance(asi.test2, str) returns True
             # asi.test2.shape returns ()
             # Beware that objects whose shape is () are not warranted
diff --git a/vitables/utils.py b/vitables/utils.py
index 11f616ee..c0b4b308 100644
--- a/vitables/utils.py
+++ b/vitables/utils.py
@@ -453,7 +453,7 @@ def formatArrayContent(content):
     :Parameter content: the ``numpy`` array contained in the view cell
     """
 
-    if isinstance(content, numpy.string_):
+    if isinstance(content, numpy.bytes_):
         try:
             return content.decode(DEFAULT_ENCODING)
         except UnicodeDecodeError: