diff --git a/openpype/tools/project_manager/project_manager/constants.py b/openpype/tools/project_manager/project_manager/constants.py
index 7f9a859ac1..76d3d3cda1 100644
--- a/openpype/tools/project_manager/project_manager/constants.py
+++ b/openpype/tools/project_manager/project_manager/constants.py
@@ -1,3 +1,4 @@
+import re
 from Qt import QtCore
 
 
@@ -5,3 +6,6 @@ IDENTIFIER_ROLE = QtCore.Qt.UserRole + 1
 DUPLICATED_ROLE = QtCore.Qt.UserRole + 2
 HIERARCHY_CHANGE_ABLE_ROLE = QtCore.Qt.UserRole + 3
 REMOVED_ROLE = QtCore.Qt.UserRole + 4
+
+NAME_ALLOWED_SYMBOLS = "a-zA-Z0-9_"
+NAME_REGEX = re.compile("^[" + NAME_ALLOWED_SYMBOLS + "]*$")
diff --git a/openpype/tools/project_manager/project_manager/delegates.py b/openpype/tools/project_manager/project_manager/delegates.py
index bfd6cfaabb..18e3e2d81b 100644
--- a/openpype/tools/project_manager/project_manager/delegates.py
+++ b/openpype/tools/project_manager/project_manager/delegates.py
@@ -1,7 +1,7 @@
 from Qt import QtWidgets, QtCore
 
 from .widgets import (
-    RegexTextEdit,
+    NameTextEdit,
     FilterComboBox
 )
 from .multiselection_combobox import MultiSelectionComboBox
@@ -39,16 +39,9 @@ class NumberDelegate(QtWidgets.QStyledItemDelegate):
     #     return super().updateEditorGeometry(editor, options, index)
 
 
-class StringDelegate(QtWidgets.QStyledItemDelegate):
-    def __init__(self, regex, *args, **kwargs):
-        super(StringDelegate, self).__init__(*args, **kwargs)
-        self._regex = regex
-
+class NameDelegate(QtWidgets.QStyledItemDelegate):
     def createEditor(self, parent, option, index):
-        if self._regex:
-            editor = RegexTextEdit(self._regex, parent)
-        else:
-            editor = QtWidgets.QLineEdit(parent)
+        editor = NameTextEdit(parent)
         value = index.data(QtCore.Qt.EditRole)
         if value is not None:
             editor.setText(str(value))
diff --git a/openpype/tools/project_manager/project_manager/view.py b/openpype/tools/project_manager/project_manager/view.py
index be7513de25..b782d27d47 100644
--- a/openpype/tools/project_manager/project_manager/view.py
+++ b/openpype/tools/project_manager/project_manager/view.py
@@ -2,7 +2,7 @@ from Qt import QtWidgets, QtCore
 
 from .delegates import (
     NumberDelegate,
-    StringDelegate,
+    NameDelegate,
     TypeDelegate,
     ToolsDelegate
 )
@@ -10,9 +10,8 @@ from .delegates import (
 from openpype.lib import ApplicationManager
 
 
-class StringDef:
-    def __init__(self, regex=None):
-        self.regex = regex
+class NameDef:
+    pass
 
 
 class NumberDef:
@@ -63,7 +62,7 @@ class ToolsCache:
 class HierarchyView(QtWidgets.QTreeView):
     """A tree view that deselects on clicking on an empty area in the view"""
     column_delegate_defs = {
-        "name": StringDef(),
+        "name": NameDef(),
         "type": TypeDef(),
         "frameStart": NumberDef(1),
         "frameEnd": NumberDef(1),
@@ -107,8 +106,8 @@ class HierarchyView(QtWidgets.QTreeView):
         column_delegates = {}
         column_key_to_index = {}
         for key, item_type in self.column_delegate_defs.items():
-            if isinstance(item_type, StringDef):
-                delegate = StringDelegate(item_type.regex)
+            if isinstance(item_type, NameDef):
+                delegate = NameDelegate()
 
             elif isinstance(item_type, NumberDef):
                 delegate = NumberDelegate(
diff --git a/openpype/tools/project_manager/project_manager/widgets.py b/openpype/tools/project_manager/project_manager/widgets.py
index 9ef5dfaf85..878033de27 100644
--- a/openpype/tools/project_manager/project_manager/widgets.py
+++ b/openpype/tools/project_manager/project_manager/widgets.py
@@ -1,10 +1,14 @@
+import re
+from .constants import (
+    NAME_ALLOWED_SYMBOLS,
+    NAME_REGEX
+)
 from Qt import QtWidgets, QtCore
 
 
-class RegexTextEdit(QtWidgets.QLineEdit):
-    def __init__(self, regex, *args, **kwargs):
-        super(RegexTextEdit, self).__init__(*args, **kwargs)
-        self._regex = regex
+class NameTextEdit(QtWidgets.QLineEdit):
+    def __init__(self, *args, **kwargs):
+        super(NameTextEdit, self).__init__(*args, **kwargs)
 
         self.textChanged.connect(self._on_text_change)