diff --git a/libs/xmlrpc-c/lib/abyss/src/socket_win.c b/libs/xmlrpc-c/lib/abyss/src/socket_win.c
index 757bdeae09..730689584e 100644
--- a/libs/xmlrpc-c/lib/abyss/src/socket_win.c
+++ b/libs/xmlrpc-c/lib/abyss/src/socket_win.c
@@ -791,6 +791,10 @@ chanSwitchInterrupt(TChanSwitch * const chanSwitchP) {
   Actually, this is just a no-op because we don't yet know how to
   accomplish that.
 -----------------------------------------------------------------------------*/
+    struct socketWin * const socketWinP = chanSwitchP->implP;
+
+    if (!socketWinP->userSuppliedWinsock)
+        closesocket(socketWinP->winsock);
 
 }