diff --git a/src/core/hle/libraries/libkernel/thread_management.cpp b/src/core/hle/libraries/libkernel/thread_management.cpp
index eea73442..35b6b990 100644
--- a/src/core/hle/libraries/libkernel/thread_management.cpp
+++ b/src/core/hle/libraries/libkernel/thread_management.cpp
@@ -193,6 +193,8 @@ int PS4_SYSV_ABI scePthreadMutexattrSetprotocol(ScePthreadMutexattr* attr, int p
 
     return result == 0 ? SCE_OK : SCE_KERNEL_ERROR_EINVAL;
 }
+int PS4_SYSV_ABI scePthreadMutexLock(ScePthreadMutex* mutex) {}
+int PS4_SYSV_ABI scePthreadMutexUnlock(ScePthreadMutex* mutex) {}
 
 int PS4_SYSV_ABI posix_pthread_mutex_init(ScePthreadMutex* mutex, const ScePthreadMutexattr* attr) {
     LOG_INFO_IF(log_pthread_file, "posix pthread_mutex_init redirect to scePthreadMutexInit\n");
@@ -203,6 +205,24 @@ int PS4_SYSV_ABI posix_pthread_mutex_init(ScePthreadMutex* mutex, const ScePthre
     return result;
 }
 
+int PS4_SYSV_ABI posix_pthread_mutex_lock(ScePthreadMutex* mutex) {
+    LOG_INFO_IF(log_pthread_file, "posix pthread_mutex_lock redirect to scePthreadMutexLock\n");
+    int result = scePthreadMutexLock(mutex);
+    if (result < 0) {
+        BREAKPOINT();  // posix calls different only for their return values
+    }
+    return result;
+}
+
+int PS4_SYSV_ABI posix_pthread_mutex_unlock(ScePthreadMutex* mutex) {
+    LOG_INFO_IF(log_pthread_file, "posix pthread_mutex_unlock redirect to scePthreadMutexUnlock\n");
+    int result = scePthreadMutexUnlock(mutex);
+    if (result < 0) {
+        BREAKPOINT();  // posix calls different only for their return values
+    }
+    return result;
+}
+
 void pthreadSymbolsRegister(Loader::SymbolsResolver* sym) {
     LIB_FUNCTION("cmo1RIYva9o", "libkernel", 1, "libkernel", 1, 1, scePthreadMutexInit);
     LIB_FUNCTION("F8bUHwAG284", "libkernel", 1, "libkernel", 1, 1, scePthreadMutexattrInit);
@@ -213,8 +233,11 @@ void pthreadSymbolsRegister(Loader::SymbolsResolver* sym) {
     LIB_FUNCTION("eXbUSpEaTsA", "libkernel", 1, "libkernel", 1, 1, scePthreadAttrSetinheritsched);
     LIB_FUNCTION("DzES9hQF4f4", "libkernel", 1, "libkernel", 1, 1, scePthreadAttrSetschedparam);
     LIB_FUNCTION("nsYoNRywwNg", "libkernel", 1, "libkernel", 1, 1, scePthreadAttrInit);
+    LIB_FUNCTION("9UK1vLZQft4", "libkernel", 1, "libkernel", 1, 1, scePthreadMutexLock);
+    LIB_FUNCTION("tn3VlD0hG60", "libkernel", 1, "libkernel", 1, 1, scePthreadMutexUnlock);
     // posix calls
-    LIB_FUNCTION("ttHNfU+qDBU", "libScePosix", 1, "libkernel", 1, 1, posix_pthread_mutex_init);
+    LIB_FUNCTION("7H0iTOciTLo", "libScePosix", 1, "libkernel", 1, 1, posix_pthread_mutex_lock);
+    LIB_FUNCTION("2Z+PpY6CaJg", "libScePosix", 1, "libkernel", 1, 1, posix_pthread_mutex_unlock);
 }
 
 }  // namespace Core::Libraries::LibKernel
diff --git a/src/core/hle/libraries/libkernel/thread_management.h b/src/core/hle/libraries/libkernel/thread_management.h
index 68d4fe5b..be79a4ce 100644
--- a/src/core/hle/libraries/libkernel/thread_management.h
+++ b/src/core/hle/libraries/libkernel/thread_management.h
@@ -75,10 +75,14 @@ int PS4_SYSV_ABI scePthreadMutexInit(ScePthreadMutex* mutex, const ScePthreadMut
 int PS4_SYSV_ABI scePthreadMutexattrInit(ScePthreadMutexattr* attr);
 int PS4_SYSV_ABI scePthreadMutexattrSettype(ScePthreadMutexattr* attr, int type);
 int PS4_SYSV_ABI scePthreadMutexattrSetprotocol(ScePthreadMutexattr* attr, int protocol);
+int PS4_SYSV_ABI scePthreadMutexLock(ScePthreadMutex* mutex);
+int PS4_SYSV_ABI scePthreadMutexUnlock(ScePthreadMutex* mutex);
 /****
  * Posix calls
  */
 int PS4_SYSV_ABI posix_pthread_mutex_init(ScePthreadMutex* mutex, const ScePthreadMutexattr* attr);
+int PS4_SYSV_ABI posix_pthread_mutex_lock(ScePthreadMutex* mutex);
+int PS4_SYSV_ABI posix_pthread_mutex_unlock(ScePthreadMutex* mutex);
 
 void pthreadSymbolsRegister(Loader::SymbolsResolver* sym);
 }  // namespace Core::Libraries::LibKernel