diff --git a/src/internal.c b/src/internal.c
index 6bbd38fa8c..eea01f1d4e 100644
--- a/src/internal.c
+++ b/src/internal.c
@@ -2774,6 +2774,7 @@ void SSL_CtxResourceFree(WOLFSSL_CTX* ctx)
 #ifdef WOLFSSL_STATIC_MEMORY
 static void SSL_CtxResourceFreeStaticMem(void* heap)
 {
+#ifndef SINGLE_THREADED
     if (heap != NULL
     #ifdef WOLFSSL_HEAP_TEST
         /* avoid dereferencing a test value */
@@ -2784,6 +2785,9 @@ static void SSL_CtxResourceFreeStaticMem(void* heap)
         WOLFSSL_HEAP*      mem  = hint->memory;
         wc_FreeMutex(&mem->memory_mutex);
     }
+#else
+    (void)heap;
+#endif
 }
 #endif /* WOLFSSL_STATIC_MEMORY */
 
@@ -7235,6 +7239,7 @@ int InitSSL(WOLFSSL* ssl, WOLFSSL_CTX* ctx, int writeDup)
 
         ssl_hint->memory = ctx_hint->memory;
     #ifndef WOLFSSL_STATIC_MEMORY_LEAN
+    #ifndef SINGLE_THREADED
         /* lock and check IO count / handshake count */
         if (wc_LockMutex(&(ctx_hint->memory->memory_mutex)) != 0) {
             WOLFSSL_MSG("Bad memory_mutex lock");
@@ -7243,10 +7248,13 @@ int InitSSL(WOLFSSL* ssl, WOLFSSL_CTX* ctx, int writeDup)
             WOLFSSL_ERROR_VERBOSE(BAD_MUTEX_E);
             return BAD_MUTEX_E;
         }
+    #endif
         if (ctx_hint->memory->maxHa > 0 &&
                            ctx_hint->memory->maxHa <= ctx_hint->memory->curHa) {
             WOLFSSL_MSG("At max number of handshakes for static memory");
+        #ifndef SINGLE_THREADED
             wc_UnLockMutex(&(ctx_hint->memory->memory_mutex));
+        #endif
             XFREE(ssl->heap, ctx->heap, DYNAMIC_TYPE_SSL);
             ssl->heap = NULL; /* free and set to NULL for IO counter */
             return MEMORY_E;
@@ -7255,7 +7263,9 @@ int InitSSL(WOLFSSL* ssl, WOLFSSL_CTX* ctx, int writeDup)
         if (ctx_hint->memory->maxIO > 0 &&
                            ctx_hint->memory->maxIO <= ctx_hint->memory->curIO) {
             WOLFSSL_MSG("At max number of IO allowed for static memory");
+        #ifndef SINGLE_THREADED
             wc_UnLockMutex(&(ctx_hint->memory->memory_mutex));
+        #endif
             XFREE(ssl->heap, ctx->heap, DYNAMIC_TYPE_SSL);
             ssl->heap = NULL; /* free and set to NULL for IO counter */
             return MEMORY_E;
@@ -7263,7 +7273,9 @@ int InitSSL(WOLFSSL* ssl, WOLFSSL_CTX* ctx, int writeDup)
         ctx_hint->memory->curIO++;
         ctx_hint->memory->curHa++;
         ssl_hint->haFlag = 1;
+    #ifndef SINGLE_THREADED
         wc_UnLockMutex(&(ctx_hint->memory->memory_mutex));
+    #endif
 
         /* check if tracking stats */
         if (ctx_hint->memory->flag & WOLFMEM_TRACK_STATS) {
@@ -7277,25 +7289,35 @@ int InitSSL(WOLFSSL* ssl, WOLFSSL_CTX* ctx, int writeDup)
 
         /* check if using fixed IO buffers */
         if (ctx_hint->memory->flag & WOLFMEM_IO_POOL_FIXED) {
+        #ifndef SINGLE_THREADED
             if (wc_LockMutex(&(ctx_hint->memory->memory_mutex)) != 0) {
                 WOLFSSL_MSG("Bad memory_mutex lock");
                 WOLFSSL_ERROR_VERBOSE(BAD_MUTEX_E);
                 return BAD_MUTEX_E;
             }
+        #endif
             if (SetFixedIO(ctx_hint->memory, &(ssl_hint->inBuf)) != 1) {
+            #ifndef SINGLE_THREADED
                 wc_UnLockMutex(&(ctx_hint->memory->memory_mutex));
+            #endif
                 return MEMORY_E;
             }
             if (SetFixedIO(ctx_hint->memory, &(ssl_hint->outBuf)) != 1) {
+            #ifndef SINGLE_THREADED
                 wc_UnLockMutex(&(ctx_hint->memory->memory_mutex));
+            #endif
                 return MEMORY_E;
             }
             if (ssl_hint->outBuf == NULL || ssl_hint->inBuf == NULL) {
                 WOLFSSL_MSG("Not enough memory to create fixed IO buffers");
+            #ifndef SINGLE_THREADED
                 wc_UnLockMutex(&(ctx_hint->memory->memory_mutex));
+            #endif
                 return MEMORY_E;
             }
+       #ifndef SINGLE_THREADED
             wc_UnLockMutex(&(ctx_hint->memory->memory_mutex));
+        #endif
         }
     #endif /* !WOLFSSL_STATIC_MEMORY_LEAN */
     #ifdef WOLFSSL_HEAP_TEST
diff --git a/wolfcrypt/src/memory.c b/wolfcrypt/src/memory.c
index d9958a9e3a..916e462345 100644
--- a/wolfcrypt/src/memory.c
+++ b/wolfcrypt/src/memory.c
@@ -793,9 +793,13 @@ int wc_LoadStaticMemory(WOLFSSL_HEAP_HINT** pHint,
 void wc_UnloadStaticMemory(WOLFSSL_HEAP_HINT* heap)
 {
     WOLFSSL_ENTER("wc_UnloadStaticMemory");
+#ifndef SINGLE_THREADED
     if (heap != NULL && heap->memory != NULL) {
         wc_FreeMutex(&heap->memory->memory_mutex);
     }
+#else
+    (void)heap;
+#endif
 }
 
 #ifndef WOLFSSL_STATIC_MEMORY_LEAN