diff --git a/Modules/overlapped.c b/Modules/overlapped.c
index 52ed0bc..b35f708 100644
--- a/Modules/overlapped.c
+++ b/Modules/overlapped.c
@@ -670,7 +670,6 @@
         return PyUnicode_FromString(buf);
 }
 
-#ifdef ENABLE_IPV6
 /* Convert IPv6 sockaddr to a Python str. */
 
 static PyObject *
@@ -683,7 +682,6 @@
         }
         return PyUnicode_FromString(buf);
 }
-#endif
 
 static PyObject*
 unparse_address(LPSOCKADDR Address, DWORD Length)
@@ -701,7 +699,6 @@
             }
             return ret;
         }
-#ifdef ENABLE_IPV6
         case AF_INET6: {
             const struct sockaddr_in6 *a = (const struct sockaddr_in6 *)Address;
             PyObject *addrobj = make_ipv6_addr(a);
@@ -716,9 +713,9 @@
             }
             return ret;
         }
-#endif /* ENABLE_IPV6 */
         default: {
-            return SetFromWindowsErr(ERROR_INVALID_PARAMETER);
+            PyErr_SetString(PyExc_ValueError, "recvfrom returned unsupported address family");
+            return NULL;
         }
     }
 }