diff --git a/Lib/socket.py b/Lib/socket.py
index bfca763f72c826..0ed86afb4a9ea5 100644
--- a/Lib/socket.py
+++ b/Lib/socket.py
@@ -123,7 +123,7 @@ def _intenum_converter(value, enum_klass):
     errorTab[10014] = "A fault occurred on the network??"  # WSAEFAULT
     errorTab[10022] = "An invalid operation was attempted."
     errorTab[10024] = "Too many open files."
-    errorTab[10035] = "The socket operation would block"
+    errorTab[10035] = "The socket operation would block."
     errorTab[10036] = "A blocking operation is already in progress."
     errorTab[10037] = "Operation already in progress."
     errorTab[10038] = "Socket operation on nonsocket."