diff --git a/Source/IO/IPC/AuIPCPipe.Unix.cpp b/Source/IO/IPC/AuIPCPipe.Unix.cpp
index 181b3a00..a653e1f3 100644
--- a/Source/IO/IPC/AuIPCPipe.Unix.cpp
+++ b/Source/IO/IPC/AuIPCPipe.Unix.cpp
@@ -63,7 +63,7 @@ namespace Aurora::IO::IPC
     #if defined(FIONREAD)
 
         int available {};
-        if (::ioctl(fds[1], FIONREAD, &available) < 0)
+        if (::ioctl(this->secondary[0], FIONREAD, &available) < 0)
         {
             return;
         }
@@ -75,7 +75,7 @@ namespace Aurora::IO::IPC
 
         AuByteBuffer temp(available);
         SysAssert(temp);
-        
+
         AuUInt uCounter {};
         while (this->ReadEx({temp, uCounter}, true, false))
         {
@@ -199,10 +199,16 @@ namespace Aurora::IO::IPC
 
     bool IPCPipeImpl::ReadEx(const Memory::MemoryViewStreamWrite &write, bool nonblock, bool bSide)
     {
-        auto handle = bSide ? fds[0] : fds[1];
+        auto handle = bSide ? this->fds[0] : this->secondary[0];
+
         auto control = ::fcntl(handle, F_GETFL);
         auto ref = control;
 
+        if (control < 0)
+        {
+            return false;
+        }
+
         if (nonblock)
         {
             control |= O_NONBLOCK;
@@ -221,7 +227,7 @@ namespace Aurora::IO::IPC
         {
         #if defined(FIONREAD)
             int available {};
-            if (::ioctl(fds[0], FIONREAD, &available) < 0)
+            if (::ioctl(handle, FIONREAD, &available) < 0)
             {
                 return false;
             }
diff --git a/Source/Threading/Primitives/AuMutex.Linux.hpp b/Source/Threading/Primitives/AuMutex.Linux.hpp
index f8fb2ba5..9247ea76 100755
--- a/Source/Threading/Primitives/AuMutex.Linux.hpp
+++ b/Source/Threading/Primitives/AuMutex.Linux.hpp
@@ -20,7 +20,7 @@ namespace Aurora::Threading::Primitives
         void SlowLock() override;
         bool LockMS(AuUInt64 timeout) override;
         bool LockNS(AuUInt64 timeout) override;
-        bool LockAbsNS(AuUInt64 uTimeout);
+        bool LockAbsNS(AuUInt64 uTimeout) override;
         void Unlock() override;
 
         auline bool TryLockNoSpin();