diff --git a/patches/patchinstall.sh b/patches/patchinstall.sh
index 3f502cb2..2cdc3de7 100755
--- a/patches/patchinstall.sh
+++ b/patches/patchinstall.sh
@@ -277,6 +277,7 @@ patch_enable_all ()
 	enable_winmm_mciSendCommandA="$1"
 	enable_wintab32_improvements="$1"
 	enable_wintrust_WTHelperGetProvCertFromChain="$1"
+	enable_ws2_32_connect_already_connected="$1"
 	enable_wscript_support_d_u_switches="$1"
 	enable_xactengine_initial="$1"
 	enable_xactengine3_7_Notification="$1"
@@ -872,6 +873,9 @@ patch_enable ()
 		wintrust-WTHelperGetProvCertFromChain)
 			enable_wintrust_WTHelperGetProvCertFromChain="$2"
 			;;
+		ws2_32-connect-already-connected)
+			enable_ws2_32_connect_already_connected="$2"
+			;;
 		wscript-support-d-u-switches)
 			enable_wscript_support_d_u_switches="$2"
 			;;
@@ -4184,6 +4188,18 @@ if test "$enable_wintrust_WTHelperGetProvCertFromChain" -eq 1; then
 	patch_apply wintrust-WTHelperGetProvCertFromChain/0001-wintrust-Add-parameter-check-in-WTHelperGetProvCertF.patch
 fi
 
+# Patchset ws2_32-connect-already-connected
+# |
+# | This patchset fixes the following Wine bugs:
+# |   *	[#51381] ws2_32: return correct error code when already connected.
+# |
+# | Modified files:
+# |   *	dlls/ws2_32/socket.c, server/sock.c
+# |
+if test "$enable_ws2_32_connect_already_connected" -eq 1; then
+	patch_apply ws2_32-connect-already-connected/0001-ws2_32-Return-STATUS_ADDRESS_ALREADY_ASSOCIATED-for-.patch
+fi
+
 # Patchset wscript-support-d-u-switches
 # |
 # | This patchset fixes the following Wine bugs:
diff --git a/patches/ws2_32-connect-already-connected/0001-ws2_32-Return-STATUS_ADDRESS_ALREADY_ASSOCIATED-for-.patch b/patches/ws2_32-connect-already-connected/0001-ws2_32-Return-STATUS_ADDRESS_ALREADY_ASSOCIATED-for-.patch
new file mode 100644
index 00000000..846001e3
--- /dev/null
+++ b/patches/ws2_32-connect-already-connected/0001-ws2_32-Return-STATUS_ADDRESS_ALREADY_ASSOCIATED-for-.patch
@@ -0,0 +1,43 @@
+From 3cc8df69a7e3037530910dc1dbb310488b4c2d19 Mon Sep 17 00:00:00 2001
+From: Zebediah Figura <z.figura12@gmail.com>
+Date: Fri, 2 Jul 2021 13:07:26 +1000
+Subject: [PATCH] ws2_32: Return STATUS_ADDRESS_ALREADY_ASSOCIATED for
+ connected sockets
+
+---
+ dlls/ws2_32/socket.c | 5 +++++
+ server/sock.c        | 2 +-
+ 2 files changed, 6 insertions(+), 1 deletion(-)
+
+diff --git a/dlls/ws2_32/socket.c b/dlls/ws2_32/socket.c
+index 87966545bb8..aab338b3fad 100644
+--- a/dlls/ws2_32/socket.c
++++ b/dlls/ws2_32/socket.c
+@@ -1867,6 +1867,11 @@ int WINAPI WS_connect( SOCKET s, const struct WS_sockaddr *addr, int len )
+         if (WaitForSingleObject( sync_event, INFINITE ) == WAIT_FAILED) return -1;
+         status = io.u.Status;
+     }
++    if (status == STATUS_ADDRESS_ALREADY_ASSOCIATED)
++    {
++        SetLastError( WSAEALREADY );
++        return -1;
++    }
+     if (status)
+     {
+         /* NtStatusToWSAError() has no mapping for WSAEALREADY */
+diff --git a/server/sock.c b/server/sock.c
+index 65489c183ac..1de234d7eb5 100644
+--- a/server/sock.c
++++ b/server/sock.c
+@@ -1928,7 +1928,7 @@ static int sock_get_ntstatus( int err )
+         case EMFILE:            return STATUS_TOO_MANY_OPENED_FILES;
+         case EINPROGRESS:
+         case EWOULDBLOCK:       return STATUS_DEVICE_NOT_READY;
+-        case EALREADY:          return STATUS_NETWORK_BUSY;
++        case EALREADY:          return STATUS_ADDRESS_ALREADY_ASSOCIATED;
+         case ENOTSOCK:          return STATUS_OBJECT_TYPE_MISMATCH;
+         case EDESTADDRREQ:      return STATUS_INVALID_PARAMETER;
+         case EMSGSIZE:          return STATUS_BUFFER_OVERFLOW;
+-- 
+2.30.2
+
diff --git a/patches/ws2_32-connect-already-connected/definition b/patches/ws2_32-connect-already-connected/definition
new file mode 100644
index 00000000..e818fe51
--- /dev/null
+++ b/patches/ws2_32-connect-already-connected/definition
@@ -0,0 +1 @@
+Fixes: [51381] ws2_32: return correct error code when already connected.