diff --git a/Objects/dictobject.c b/Objects/dictobject.c
index 7bff7d8..b849f57 100644
--- a/Objects/dictobject.c
+++ b/Objects/dictobject.c
@@ -2148,7 +2148,7 @@
 
 PyTypeObject PyDictIterKey_Type = {
 	PyVarObject_HEAD_INIT(&PyType_Type, 0)
-	"dictionary-keyiterator",		/* tp_name */
+	"dict_keyiterator",			/* tp_name */
 	sizeof(dictiterobject),			/* tp_basicsize */
 	0,					/* tp_itemsize */
 	/* methods */
@@ -2220,7 +2220,7 @@
 
 PyTypeObject PyDictIterValue_Type = {
 	PyVarObject_HEAD_INIT(&PyType_Type, 0)
-	"dictionary-valueiterator",		/* tp_name */
+	"dict_valueiterator",			/* tp_name */
 	sizeof(dictiterobject),			/* tp_basicsize */
 	0,					/* tp_itemsize */
 	/* methods */
@@ -2306,7 +2306,7 @@
 
 PyTypeObject PyDictIterItem_Type = {
 	PyVarObject_HEAD_INIT(&PyType_Type, 0)
-	"dictionary-itemiterator",		/* tp_name */
+	"dict_itemiterator",			/* tp_name */
 	sizeof(dictiterobject),			/* tp_basicsize */
 	0,					/* tp_itemsize */
 	/* methods */
diff --git a/Objects/iterobject.c b/Objects/iterobject.c
index 32b9f94..ce9c661 100644
--- a/Objects/iterobject.c
+++ b/Objects/iterobject.c
@@ -369,7 +369,7 @@
 
 static PyTypeObject PyZipIter_Type = {
 	PyVarObject_HEAD_INIT(0, 0)
-	"zipiterator",				/* tp_name */
+	"zip_iterator",				/* tp_name */
 	sizeof(zipiterobject),			/* tp_basicsize */
 	0,					/* tp_itemsize */
 	/* methods */
diff --git a/Objects/listobject.c b/Objects/listobject.c
index 5df40fa..1d82e35 100644
--- a/Objects/listobject.c
+++ b/Objects/listobject.c
@@ -2726,7 +2726,7 @@
 
 PyTypeObject PyListIter_Type = {
 	PyVarObject_HEAD_INIT(&PyType_Type, 0)
-	"listiterator",				/* tp_name */
+	"list_iterator",			/* tp_name */
 	sizeof(listiterobject),			/* tp_basicsize */
 	0,					/* tp_itemsize */
 	/* methods */
@@ -2848,7 +2848,7 @@
 
 PyTypeObject PyListRevIter_Type = {
 	PyVarObject_HEAD_INIT(&PyType_Type, 0)
-	"listreverseiterator",			/* tp_name */
+	"list_reverseiterator",			/* tp_name */
 	sizeof(listreviterobject),		/* tp_basicsize */
 	0,					/* tp_itemsize */
 	/* methods */
diff --git a/Objects/rangeobject.c b/Objects/rangeobject.c
index 0bb3e7b..d1c959a 100644
--- a/Objects/rangeobject.c
+++ b/Objects/rangeobject.c
@@ -369,7 +369,7 @@
 
 PyTypeObject Pyrangeiter_Type = {
 	PyVarObject_HEAD_INIT(&PyType_Type, 0)
-	"rangeiterator",                        /* tp_name */
+	"range_iterator",                        /* tp_name */
 	sizeof(rangeiterobject),                /* tp_basicsize */
 	0,                                      /* tp_itemsize */
 	/* methods */
diff --git a/Objects/setobject.c b/Objects/setobject.c
index d85a28d..e4e7780 100644
--- a/Objects/setobject.c
+++ b/Objects/setobject.c
@@ -851,7 +851,7 @@
 
 static PyTypeObject PySetIter_Type = {
 	PyVarObject_HEAD_INIT(&PyType_Type, 0)
-	"setiterator",				/* tp_name */
+	"set_iterator",				/* tp_name */
 	sizeof(setiterobject),			/* tp_basicsize */
 	0,					/* tp_itemsize */
 	/* methods */
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index 205576f..26349ef 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -9263,7 +9263,7 @@
 
 PyTypeObject PyUnicodeIter_Type = {
 	PyVarObject_HEAD_INIT(&PyType_Type, 0)
-	"unicode_iterator",			/* tp_name */
+	"str_iterator",			/* tp_name */
 	sizeof(unicodeiterobject),		/* tp_basicsize */
 	0,					/* tp_itemsize */
 	/* methods */