diff --git a/src/teakra/src/apbp.cpp b/src/teakra/src/apbp.cpp
index da301684..e00fb759 100644
--- a/src/teakra/src/apbp.cpp
+++ b/src/teakra/src/apbp.cpp
@@ -14,7 +14,7 @@ public:
 
     void Send(u16 data) {
         {
-            std::lock_guard lock(mutex);
+            //std::lock_guard lock(mutex);
             ready = true;
             this->data = data;
             if (disable_interrupt)
@@ -24,20 +24,20 @@ public:
             handler();
     }
     u16 Recv() {
-        std::lock_guard lock(mutex);
+        //std::lock_guard lock(mutex);
         ready = false;
         return data;
     }
     u16 Peek() const {
-        std::lock_guard lock(mutex);
+        //std::lock_guard lock(mutex);
         return data;
     }
     bool IsReady() const {
-        std::lock_guard lock(mutex);
+        //std::lock_guard lock(mutex);
         return ready;
     }
     u16 GetDisableInterrupt() const {
-        std::lock_guard lock(mutex);
+        //std::lock_guard lock(mutex);
         return disable_interrupt;
     }
     void SetDisableInterrupt(u16 v) {
@@ -107,7 +107,7 @@ void Apbp::SetDataHandler(unsigned channel, std::function<void()> handler) {
 }
 
 void Apbp::SetSemaphore(u16 bits) {
-    std::lock_guard lock(impl->semaphore_mutex);
+    //std::lock_guard lock(impl->semaphore_mutex);
     impl->semaphore |= bits;
     bool new_signal = (impl->semaphore & ~impl->semaphore_mask) != 0;
     if (new_signal && impl->semaphore_handler) {
@@ -117,33 +117,33 @@ void Apbp::SetSemaphore(u16 bits) {
 }
 
 void Apbp::ClearSemaphore(u16 bits) {
-    std::lock_guard lock(impl->semaphore_mutex);
+    //std::lock_guard lock(impl->semaphore_mutex);
     impl->semaphore &= ~bits;
     impl->semaphore_master_signal = (impl->semaphore & ~impl->semaphore_mask) != 0;
 }
 
 u16 Apbp::GetSemaphore() const {
-    std::lock_guard lock(impl->semaphore_mutex);
+    //std::lock_guard lock(impl->semaphore_mutex);
     return impl->semaphore;
 }
 
 void Apbp::MaskSemaphore(u16 bits) {
-    std::lock_guard lock(impl->semaphore_mutex);
+    //std::lock_guard lock(impl->semaphore_mutex);
     impl->semaphore_mask = bits;
 }
 
 u16 Apbp::GetSemaphoreMask() const {
-    std::lock_guard lock(impl->semaphore_mutex);
+    //std::lock_guard lock(impl->semaphore_mutex);
     return impl->semaphore_mask;
 }
 
 void Apbp::SetSemaphoreHandler(std::function<void()> handler) {
-    std::lock_guard lock(impl->semaphore_mutex);
+    //std::lock_guard lock(impl->semaphore_mutex);
     impl->semaphore_handler = std::move(handler);
 }
 
 bool Apbp::IsSemaphoreSignaled() const {
-    std::lock_guard lock(impl->semaphore_mutex);
+    //std::lock_guard lock(impl->semaphore_mutex);
     return impl->semaphore_master_signal;
 }
 } // namespace Teakra