diff --git a/src/core/libraries/kernel/file_system.cpp b/src/core/libraries/kernel/file_system.cpp
index 223d35fb6..ba4b9f64e 100644
--- a/src/core/libraries/kernel/file_system.cpp
+++ b/src/core/libraries/kernel/file_system.cpp
@@ -987,7 +987,7 @@ void RegisterFileSystem(Core::Loader::SymbolsResolver* sym) {
     // LIB_FUNCTION("Z2aKdxzS4KE", "libScePosix", 1, "libkernel", 1, 1, posix_writev);
     // LIB_FUNCTION("Z2aKdxzS4KE", "libkernel", 1, "libkernel", 1, 1, posix_writev);
     // LIB_FUNCTION("kAt6VDbHmro", "libkernel", 1, "libkernel", 1, 1, sceKernelWritev);
-    // LIB_FUNCTION("Oy6IpwgtYOk", "libScePosix", 1, "libkernel", 1, 1, posix_lseek);
+    LIB_FUNCTION("Oy6IpwgtYOk", "libScePosix", 1, "libkernel", 1, 1, posix_lseek);
     LIB_FUNCTION("Oy6IpwgtYOk", "libkernel", 1, "libkernel", 1, 1, posix_lseek);
     LIB_FUNCTION("oib76F-12fk", "libkernel", 1, "libkernel", 1, 1, sceKernelLseek);
     // LIB_FUNCTION("DRuBt2pvICk", "libkernel", 1, "libkernel", 1, 1, read);
@@ -1003,7 +1003,7 @@ void RegisterFileSystem(Core::Loader::SymbolsResolver* sym) {
     LIB_FUNCTION("E6ao34wPw+U", "libScePosix", 1, "libkernel", 1, 1, posix_stat);
     // LIB_FUNCTION("E6ao34wPw+U", "libkernel", 1, "libkernel", 1, 1, posix_stat);
     LIB_FUNCTION("eV9wAD2riIA", "libkernel", 1, "libkernel", 1, 1, sceKernelStat);
-    // LIB_FUNCTION("uWyW3v98sU4", "libkernel", 1, "libkernel", 1, 1, sceKernelCheckReachability);
+    LIB_FUNCTION("uWyW3v98sU4", "libkernel", 1, "libkernel", 1, 1, sceKernelCheckReachability);
     // LIB_FUNCTION("A0O5kF5x4LQ", "libkernel", 1, "libkernel", 1, 1, fstat);
     LIB_FUNCTION("mqQMh1zPPT8", "libScePosix", 1, "libkernel", 1, 1, posix_fstat);
     // LIB_FUNCTION("mqQMh1zPPT8", "libkernel", 1, "libkernel", 1, 1, posix_fstat);
@@ -1020,7 +1020,7 @@ void RegisterFileSystem(Core::Loader::SymbolsResolver* sym) {
     // LIB_FUNCTION("ezv-RSBNKqI", "libScePosix", 1, "libkernel", 1, 1, posix_pread);
     // LIB_FUNCTION("ezv-RSBNKqI", "libkernel", 1, "libkernel", 1, 1, posix_pread);
     LIB_FUNCTION("+r3rMFwItV4", "libkernel", 1, "libkernel", 1, 1, sceKernelPread);
-    // LIB_FUNCTION("juWbTNM+8hw", "libScePosix", 1, "libkernel", 1, 1, posix_fsync);
+    LIB_FUNCTION("juWbTNM+8hw", "libScePosix", 1, "libkernel", 1, 1, posix_fsync);
     // LIB_FUNCTION("juWbTNM+8hw", "libkernel", 1, "libkernel", 1, 1, posix_fsync);
     // LIB_FUNCTION("fTx66l5iWIA", "libkernel", 1, "libkernel", 1, 1, sceKernelFsync);
     // LIB_FUNCTION("2G6i6hMIUUY", "libScePosix", 1, "libkernel", 1, 1, posix_getdents);