diff --git a/Objects/bytesobject.c b/Objects/bytesobject.c
index 7438a70..a89798a 100644
--- a/Objects/bytesobject.c
+++ b/Objects/bytesobject.c
@@ -2941,7 +2941,7 @@
         PyErr_BadInternalCall();
         return NULL;
     }
-    llen = PyUnicode_GetSize(result);
+    llen = PyUnicode_GetLength(result);
     if (llen > INT_MAX) {
         PyErr_SetString(PyExc_ValueError,
                         "string too large in _PyBytes_FormatLong");
diff --git a/Objects/exceptions.c b/Objects/exceptions.c
index a1b79a8..37b7875 100644
--- a/Objects/exceptions.c
+++ b/Objects/exceptions.c
@@ -1273,7 +1273,7 @@
     if (!obj)
         return -1;
     *start = ((PyUnicodeErrorObject *)exc)->start;
-    size = PyUnicode_GET_SIZE(obj);
+    size = PyUnicode_GET_LENGTH(obj);
     if (*start<0)
         *start = 0; /*XXX check for values <0*/
     if (*start>=size)
@@ -1341,7 +1341,7 @@
     if (!obj)
         return -1;
     *end = ((PyUnicodeErrorObject *)exc)->end;
-    size = PyUnicode_GET_SIZE(obj);
+    size = PyUnicode_GET_LENGTH(obj);
     if (*end<1)
         *end = 1;
     if (*end>size)
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index 1e44357..6798ef8 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -4784,7 +4784,7 @@
             if (PyBytes_Check(rep))
                 repsize = PyBytes_GET_SIZE(rep);
             else
-                repsize = PyUnicode_GET_SIZE(rep);
+                repsize = PyUnicode_GET_LENGTH(rep);
 
             if (repsize > 4) {
                 Py_ssize_t offset;
@@ -8187,7 +8187,7 @@
             Py_DECREF(repunicode);
             return -1;
         }
-        repsize = PyUnicode_GET_SIZE(repunicode);
+        repsize = PyUnicode_GET_LENGTH(repunicode);
         data = PyUnicode_DATA(repunicode);
         kind = PyUnicode_KIND(repunicode);
         for (index = 0; index < repsize; index++) {