diff --git a/core/libs/prx/libScePosixForWebKit/Filesystem.cpp b/core/libs/prx/libScePosixForWebKit/Filesystem.cpp
index 0bdf7aa37..b5245f5b1 100644
--- a/core/libs/prx/libScePosixForWebKit/Filesystem.cpp
+++ b/core/libs/prx/libScePosixForWebKit/Filesystem.cpp
@@ -63,7 +63,7 @@ extern "C" int APS5_VABI mkstemp_nid_postfix(char* pattern) {
 
 extern "C" int APS5_VABI isatty_nid_postfix(int descriptor) {
     if (descriptor >= GuestSockets::FirstDescriptor) {
-        Failure(GuestSockets::IsOpen(descriptor) ? 25 : 9);
+        Failure(GuestSocketIsOpen_nid_no_patch(descriptor) ? 25 : 9);
         return 0;
     }
 #ifdef _WIN32
diff --git a/core/libs/prx/libkernel/Socket/include/SocketRuntime.hpp b/core/libs/prx/libkernel/Socket/include/SocketRuntime.hpp
index 0ef89de10..e943a1da9 100644
--- a/core/libs/prx/libkernel/Socket/include/SocketRuntime.hpp
+++ b/core/libs/prx/libkernel/Socket/include/SocketRuntime.hpp
@@ -4,3 +4,5 @@ constexpr int FirstDescriptor = 0x10000000;
 int Close(int descriptor);
 bool IsOpen(int descriptor);
 }
+
+extern "C" bool GuestSocketIsOpen_nid_no_patch(int descriptor);
diff --git a/core/libs/prx/libkernel/Socket/src/Udp.cpp b/core/libs/prx/libkernel/Socket/src/Udp.cpp
index 5b856cb03..4798010de 100644
--- a/core/libs/prx/libkernel/Socket/src/Udp.cpp
+++ b/core/libs/prx/libkernel/Socket/src/Udp.cpp
@@ -181,6 +181,10 @@ bool GuestSockets::IsOpen(int descriptor) {
     return sockets.contains(descriptor);
 }
 
+extern "C" bool GuestSocketIsOpen_nid_no_patch(int descriptor) {
+    return GuestSockets::IsOpen(descriptor);
+}
+
 namespace {
 #ifdef _WIN32
 using NativePollDescriptor = WSAPOLLFD;