diff --git a/Modules/arraymodule.c b/Modules/arraymodule.c
index 24f0ea0..5ab1ab6 100644
--- a/Modules/arraymodule.c
+++ b/Modules/arraymodule.c
@@ -1441,14 +1441,14 @@
     Py_ssize_t n;
     if (buffer->itemsize != 1) {
         PyBuffer_Release(buffer);
-        PyErr_SetString(PyExc_TypeError, "string/buffer of bytes required.");
+        PyErr_SetString(PyExc_TypeError, "a bytes-like object is required");
         return NULL;
     }
     n = buffer->len;
     if (n % itemsize != 0) {
         PyBuffer_Release(buffer);
         PyErr_SetString(PyExc_ValueError,
-                   "string length not a multiple of item size");
+                   "bytes length not a multiple of item size");
         return NULL;
     }
     n = n / itemsize;
diff --git a/Modules/socketmodule.c b/Modules/socketmodule.c
index b37e793..cb44d05 100644
--- a/Modules/socketmodule.c
+++ b/Modules/socketmodule.c
@@ -3493,7 +3493,7 @@
     for (; ndatabufs < ndataparts; ndatabufs++) {
         if (!PyArg_Parse(PySequence_Fast_GET_ITEM(data_fast, ndatabufs),
                          "y*;sendmsg() argument 1 must be an iterable of "
-                         "buffer-compatible objects",
+                         "bytes-like objects",
                          &databufs[ndatabufs]))
             goto finally;
         iovs[ndatabufs].iov_base = databufs[ndatabufs].buf;
@@ -3650,12 +3650,12 @@
 Send normal and ancillary data to the socket, gathering the\n\
 non-ancillary data from a series of buffers and concatenating it into\n\
 a single message.  The buffers argument specifies the non-ancillary\n\
-data as an iterable of buffer-compatible objects (e.g. bytes objects).\n\
+data as an iterable of bytes-like objects (e.g. bytes objects).\n\
 The ancdata argument specifies the ancillary data (control messages)\n\
 as an iterable of zero or more tuples (cmsg_level, cmsg_type,\n\
 cmsg_data), where cmsg_level and cmsg_type are integers specifying the\n\
 protocol level and protocol-specific type respectively, and cmsg_data\n\
-is a buffer-compatible object holding the associated data.  The flags\n\
+is a bytes-like object holding the associated data.  The flags\n\
 argument defaults to 0 and has the same meaning as for send().  If\n\
 address is supplied and not None, it sets a destination address for\n\
 the message.  The return value is the number of bytes of non-ancillary\n\