diff --git a/AppleWin/Applewin71.vcproj b/AppleWin/Applewin71.vcproj
index 805eb595..0b3fcb93 100644
--- a/AppleWin/Applewin71.vcproj
+++ b/AppleWin/Applewin71.vcproj
@@ -24,7 +24,7 @@
 				AdditionalOptions="/Zm200 "
 				Optimization="2"
 				InlineFunctionExpansion="2"
-				PreprocessorDefinitions="WIN32;NDEBUG;_WINDOWS"
+				PreprocessorDefinitions="WIN32;NDEBUG;_WINDOWS;_VC71"
 				StringPooling="TRUE"
 				RuntimeLibrary="4"
 				EnableFunctionLevelLinking="TRUE"
@@ -86,7 +86,7 @@
 				Name="VCCLCompilerTool"
 				AdditionalOptions="/Zm200 "
 				Optimization="0"
-				PreprocessorDefinitions="WIN32;_DEBUG;_WINDOWS"
+				PreprocessorDefinitions="WIN32;_DEBUG;_WINDOWS;_VC71"
 				RuntimeLibrary="5"
 				UsePrecompiledHeader="2"
 				PrecompiledHeaderFile=".\Debug/Applewin.pch"
diff --git a/AppleWin/source/Disk.cpp b/AppleWin/source/Disk.cpp
index 706a7043..688f12de 100644
--- a/AppleWin/source/Disk.cpp
+++ b/AppleWin/source/Disk.cpp
@@ -31,12 +31,14 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
 #define LOG_DISK_ENABLED 1
 
+#ifndef _VC71
 #if LOG_DISK_ENABLED
 // __VA_ARGS__ not supported on MSVC++ .NET 7.x
     #define LOG_DISK(format, params) LOG(format, params)
 #else
     #define LOG_DISK(format, params)
 #endif
+#endif
 
 // Public _________________________________________________________________________________________
 
@@ -197,7 +199,9 @@ static void ReadTrack (int iDrive)
 
 	if (pFloppy->trackimage && pFloppy->imagehandle)
 	{
-        LOG_DISK("read track %2X%s\r", (pFloppy->track, (pFloppy->phase & 1) ? ".5" : ""));
+#ifndef _VC71
+        LOG_DISK("read track %2X%s\r", pFloppy->track, (pFloppy->phase & 1) ? ".5" : "");
+#endif
 		ImageReadTrack(
 			pFloppy->imagehandle,
 			pFloppy->track,
@@ -290,13 +294,17 @@ BYTE __stdcall DiskControlStepper (WORD, BYTE address, BYTE, BYTE, ULONG)
   {
     // phase on
     phases |= phase_bit;
-    LOG_DISK("track %02X phases %X phase %d on  address $C0E%X\r", (fptr->phase, phases, phase, address & 0xF));
+#ifndef _VC71
+    LOG_DISK("track %02X phases %X phase %d on  address $C0E%X\r", fptr->phase, phases, phase, address & 0xF);
+#endif
   }
   else
   {
     // phase off
     phases &= ~phase_bit;
-    LOG_DISK("track %02X phases %X phase %d off address $C0E%X\r", (fptr->phase, phases, phase, address & 0xF));
+#ifndef _VC71
+    LOG_DISK("track %02X phases %X phase %d off address $C0E%X\r", fptr->phase, phases, phase, address & 0xF);
+#endif
   }
 
   // check for any stepping effect from a magnet
@@ -318,7 +326,9 @@ BYTE __stdcall DiskControlStepper (WORD, BYTE address, BYTE, BYTE, ULONG)
   {
     fptr->phase = MAX(0, MIN(79, fptr->phase + direction));
     int newtrack = MIN(TRACKS-1, fptr->phase >> 1); // (round half tracks down)
-    LOG_DISK("newtrack %2X%s\r", (newtrack, (fptr->phase & 1) ? ".5" : ""));
+#ifndef _VC71
+    LOG_DISK("newtrack %2X%s\r", newtrack, (fptr->phase & 1) ? ".5" : "");
+#endif
     if (newtrack != fptr->track)
     {
       if (fptr->trackimage && fptr->trackimagedirty)
@@ -497,7 +507,9 @@ BYTE __stdcall DiskReadWrite (WORD programcounter, BYTE, BYTE, BYTE, ULONG) {
 #if LOG_DISK_ENABLED
   if (0)
   {
-    LOG_DISK("nib %4X = %2X\r", (fptr->byte, result));
+#ifndef _VC71
+    LOG_DISK("nib %4X = %2X\r", fptr->byte, result);
+#endif
   }
 #endif
   if (++fptr->byte >= fptr->nibbles)
diff --git a/AppleWin/source/Log.h b/AppleWin/source/Log.h
index 8983b13e..50df6ca7 100644
--- a/AppleWin/source/Log.h
+++ b/AppleWin/source/Log.h
@@ -1,12 +1,11 @@
 #pragma once
 
-#if _DEBUG
-// __VA_ARGS__ not supported on MSVC++ .NET 7.x
-//    #define LOG(format, ...) LogOutput(format, __VA_ARGS__)
-    #define LOG(format, params) LogOutput(format, params)
-#else
-//    #define LOG(...)
-    #define LOG(format, params)
+#ifndef _VC71	// __VA_ARGS__ not supported on MSVC++ .NET 7.x
+	#ifdef _DEBUG
+		#define LOG(format, ...) LogOutput(format, __VA_ARGS__)
+	#else
+		#define LOG(...)
+	#endif
 #endif
 
 extern void LogOutput(LPCTSTR format, ...);