diff --git a/wolfcrypt/src/wc_port.c b/wolfcrypt/src/wc_port.c
index 6295cc09b..d660f2292 100644
--- a/wolfcrypt/src/wc_port.c
+++ b/wolfcrypt/src/wc_port.c
@@ -664,7 +664,7 @@ int z_fs_close(XFILE file)
 
 #endif /* !NO_FILESYSTEM && !WOLFSSL_ZEPHYR */
 
-
+#if !defined(WOLFSSL_USER_MUTEX) 
 wolfSSL_Mutex* wc_InitAndAllocMutex(void)
 {
     wolfSSL_Mutex* m = (wolfSSL_Mutex*) XMALLOC(sizeof(wolfSSL_Mutex), NULL,
@@ -682,6 +682,7 @@ wolfSSL_Mutex* wc_InitAndAllocMutex(void)
 
     return m;
 }
+#endif
 
 #ifdef USE_WOLF_STRTOK
 /* String token (delim) search. If str is null use nextp. */
@@ -1862,6 +1863,17 @@ int wolfSSL_CryptHwMutexUnLock(void) {
         return 0;
     }
 
+#elif defined(WOLFSSL_USER_MUTEX)
+
+    /* Use user own mutex */
+    
+    /*
+    int wc_InitMutex(wolfSSL_Mutex* m) { ... }
+    int wc_FreeMutex(wolfSSL_Mutex *m) { ... }
+    int wc_LockMutex(wolfSSL_Mutex *m) { ... }
+    int wc_UnLockMutex(wolfSSL_Mutex *m) { ... }
+    */
+
 #else
     #warning No mutex handling defined
 
diff --git a/wolfssl/wolfcrypt/wc_port.h b/wolfssl/wolfcrypt/wc_port.h
index d3deb59db..da451d799 100644
--- a/wolfssl/wolfcrypt/wc_port.h
+++ b/wolfssl/wolfcrypt/wc_port.h
@@ -156,8 +156,10 @@
 
 #else
     #ifndef SINGLE_THREADED
-        #define WOLFSSL_PTHREADS
-        #include <pthread.h>
+        #ifndef  WOLFSSL_USER_MUTEX
+            #define WOLFSSL_PTHREADS
+            #include <pthread.h>
+        #endif
     #endif
     #if (defined(OPENSSL_EXTRA) || defined(GOAHEAD_WS)) && \
         !defined(NO_FILESYSTEM)
@@ -238,6 +240,8 @@
         typedef struct k_mutex wolfSSL_Mutex;
     #elif defined(WOLFSSL_TELIT_M2MB)
         typedef M2MB_OS_MTX_HANDLE wolfSSL_Mutex;
+    #elif defined(WOLFSSL_USER_MUTEX)
+        /* typedef User_Mutex wolfSSL_Mutex; */
     #else
         #error Need a mutex type in multithreaded mode
     #endif /* USE_WINDOWS_API */