diff --git a/src/superqt/combobox/_enum_combobox.py b/src/superqt/combobox/_enum_combobox.py
index fb12793..0ba38e5 100644
--- a/src/superqt/combobox/_enum_combobox.py
+++ b/src/superqt/combobox/_enum_combobox.py
@@ -12,10 +12,8 @@ NONE_STRING = "----"
 
 def _get_name(enum_value: Enum):
     """Create human readable name if user does not implement `__str__`."""
-    if (
-        enum_value.__str__.__module__ != "enum"
-        and not enum_value.__str__.__module__.startswith("shibokensupport")
-    ):
+    str_module = getattr(enum_value.__str__, "__module__", "enum")
+    if str_module != "enum" and not str_module.startswith("shibokensupport"):
         # check if function was overloaded
         name = str(enum_value)
     else:
diff --git a/tests/test_enum_comb_box.py b/tests/test_enum_comb_box.py
index 82c23f9..6c743c8 100644
--- a/tests/test_enum_comb_box.py
+++ b/tests/test_enum_comb_box.py
@@ -1,4 +1,4 @@
-from enum import Enum
+from enum import Enum, IntEnum
 
 import pytest
 
@@ -36,6 +36,12 @@ class Enum4(Enum):
     c_3 = 3
 
 
+class IntEnum1(IntEnum):
+    a = 1
+    b = 2
+    c = 5
+
+
 def test_simple_create(qtbot):
     enum = QEnumComboBox(enum_class=Enum1)
     qtbot.addWidget(enum)
@@ -129,3 +135,10 @@ def test_optional(qtbot):
     enum.setCurrentEnum(None)
     assert enum.currentText() == NONE_STRING
     assert enum.currentEnum() is None
+
+
+def test_simple_create_int_enum(qtbot):
+    enum = QEnumComboBox(enum_class=IntEnum1)
+    qtbot.addWidget(enum)
+    assert enum.count() == 3
+    assert [enum.itemText(i) for i in range(enum.count())] == ["a", "b", "c"]