diff --git a/src/sys/driver.h b/src/sys/driver.h
index 305d7774..3ebe8442 100644
--- a/src/sys/driver.h
+++ b/src/sys/driver.h
@@ -1126,7 +1126,11 @@ static inline
 BOOLEAN FspReadIrpShouldUseProcessBuffer(PIRP Irp, SIZE_T BufferSize)
 {
     ASSERT(0 != Irp);
+#if DBG
+    return DEBUGTEST(50) ||
+#else
     return FspProcessBufferSizeMax >= BufferSize ||
+#endif
         FspFsvolDeviceExtension(IoGetCurrentIrpStackLocation(Irp)->DeviceObject)->
             VolumeParams.AlwaysUseDoubleBuffering;
 }
@@ -1134,7 +1138,11 @@ static inline
 BOOLEAN FspWriteIrpShouldUseProcessBuffer(PIRP Irp, SIZE_T BufferSize)
 {
     ASSERT(0 != Irp);
+#if DBG
+    return DEBUGTEST(50) ||
+#else
     return FspProcessBufferSizeMax >= BufferSize ||
+#endif
         FspFsvolDeviceExtension(IoGetCurrentIrpStackLocation(Irp)->DeviceObject)->
             VolumeParams.AlwaysUseDoubleBuffering;
 }
diff --git a/src/sys/psbuffer.c b/src/sys/psbuffer.c
index 6d44022b..96f57e37 100644
--- a/src/sys/psbuffer.c
+++ b/src/sys/psbuffer.c
@@ -102,7 +102,7 @@ static inline VOID FspProcessBufferReuseEntry(HANDLE ProcessId,
         if (0 != BufferEntry->Buffer)
         {
             SIZE_T BufferSize = 0;
-            ZwFreeVirtualMemory(ZwCurrentProcess(), BufferEntry->Buffer, &BufferSize, MEM_RELEASE);
+            ZwFreeVirtualMemory(ZwCurrentProcess(), &BufferEntry->Buffer, &BufferSize, MEM_RELEASE);
         }
 
         FspFree(BufferEntry);
@@ -275,6 +275,6 @@ VOID FspProcessBufferRelease(PVOID BufferCookie, PVOID Buffer)
     else
     {
         SIZE_T BufferSize = 0;
-        ZwFreeVirtualMemory(ZwCurrentProcess(), Buffer, &BufferSize, MEM_RELEASE);
+        ZwFreeVirtualMemory(ZwCurrentProcess(), &Buffer, &BufferSize, MEM_RELEASE);
     }
 }