diff --git a/core/libs/prx/libkernel/File/src/Stdio.cpp b/core/libs/prx/libkernel/File/src/Stdio.cpp
index 711b9f388..f31ffaa8a 100644
--- a/core/libs/prx/libkernel/File/src/Stdio.cpp
+++ b/core/libs/prx/libkernel/File/src/Stdio.cpp
@@ -463,6 +463,16 @@ int APS5_VABI sceKernelFsync(int fd) {
 #endif
 }
 
+int APS5_VABI sceKernelFdatasync(int fd) {
+    if (fd >= GuestSockets::FirstDescriptor) return SceErrorFromErrno(GuestSockets::IsOpen(fd) ? GUEST_EINVAL : GUEST_EBADF);
+#ifdef _WIN32
+    if (::_commit(fd) != 0) return SceErrorFromErrno(errno);
+#else
+    if (::fdatasync(fd) != 0) return SceErrorFromErrno(errno);
+#endif
+    return 0;
+}
+
 int APS5_VABI sceKernelWriteThrottlingStatus(std::uint64_t* status) {
     if (status == nullptr) throw std::invalid_argument("sceKernelWriteThrottlingStatus: status is null");
     status[0] = std::numeric_limits<std::uint32_t>::max();
@@ -792,13 +802,7 @@ int APS5_VABI fsync_nid_postfix(int fd) {
 }
 
 int APS5_VABI fdatasync_nid_postfix(int fd) {
-    if (fd >= GuestSockets::FirstDescriptor) return PosixFailure(GuestSockets::IsOpen(fd) ? GUEST_EINVAL : GUEST_EBADF);
-#ifdef _WIN32
-    if (::_commit(fd) != 0) return PosixResult(SceErrorFromErrno(errno));
-#else
-    if (::fdatasync(fd) != 0) return PosixResult(SceErrorFromErrno(errno));
-#endif
-    return 0;
+    return PosixResult(sceKernelFdatasync(fd));
 }
 
 }
diff --git a/core/libs/tests/GuestFilesystem.cpp b/core/libs/tests/GuestFilesystem.cpp
index 1265d59fc..945bcdcf2 100644
--- a/core/libs/tests/GuestFilesystem.cpp
+++ b/core/libs/tests/GuestFilesystem.cpp
@@ -21,6 +21,7 @@ int APS5_VABI futimes_nid_postfix(int, const KernelTimeval*);
 int APS5_VABI socket_nid_postfix(int, int, int);
 int APS5_VABI sceKernelFsync(int);
 int APS5_VABI fdatasync_nid_postfix(int);
+int APS5_VABI sceKernelFdatasync(int);
 int APS5_VABI sceKernelWriteThrottlingStatus(std::uint64_t*);
 int APS5_VABI sceKernelFtruncate(int, long long);
 int APS5_VABI sceKernelTruncate_nid_postfix(const char*, long long);
@@ -140,6 +141,7 @@ int main() {
 #endif
     Require(descriptor >= 0 && sceKernelFsync(descriptor) == 0);
     Require(fdatasync_nid_postfix(descriptor) == 0);
+    Require(sceKernelFdatasync(descriptor) == 0);
     const auto ownerWrite = [&] {
         return (std::filesystem::status(sized).permissions() & std::filesystem::perms::owner_write) != std::filesystem::perms::none;
     };
@@ -158,22 +160,24 @@ int main() {
     Require(futimes_nid_postfix(descriptor, negative) == -1 && *__error_nid_postfix() == 22);
     Require(std::fclose(native) == 0);
     Require(std::filesystem::file_size(sized) == 3);
-#ifndef _WIN32
     Require(sceKernelFchmod(descriptor, 0600) == static_cast<int>(0x80020009u));
     Require(fchmod_nid_postfix(descriptor, 0600) == -1 && *__error_nid_postfix() == 9);
     Require(futimes_nid_postfix(descriptor, nullptr) == -1 && *__error_nid_postfix() == 9);
     Require(fdatasync_nid_postfix(descriptor) == -1 && *__error_nid_postfix() == 9);
-#endif
+    Require(sceKernelFdatasync(descriptor) == static_cast<int>(0x80020009u));
     const int socket = socket_nid_postfix(2, 2, 0);
     Require(socket >= 0);
     Require(sceKernelFchmod(socket, 0600) == static_cast<int>(0x80020016u));
     Require(fchmod_nid_postfix(socket, 0600) == -1 && *__error_nid_postfix() == 22);
     Require(futimes_nid_postfix(socket, nullptr) == -1 && *__error_nid_postfix() == 22);
     Require(fdatasync_nid_postfix(socket) == -1 && *__error_nid_postfix() == 22);
+    Require(sceKernelFdatasync(socket) == static_cast<int>(0x80020016u));
     Require(close_nid_postfix(socket) == 0);
     Require(fchmod_nid_postfix(socket, 0600) == -1 && *__error_nid_postfix() == 9);
     Require(futimes_nid_postfix(socket, nullptr) == -1 && *__error_nid_postfix() == 9);
     Require(fdatasync_nid_postfix(socket) == -1 && *__error_nid_postfix() == 9);
+    Require(sceKernelFdatasync(socket) == static_cast<int>(0x80020009u));
+    Require(sceKernelFdatasync(0x7fffffff) == static_cast<int>(0x80020009u));
     Require(remove_nid_postfix(sized.string().c_str()) == 0);
     const auto present = root / "present.txt";
     const auto presentName = present.string();