diff --git a/build/build-debug.bat b/build/build-debug.bat
index 7054be33a..a9492de13 100644
--- a/build/build-debug.bat
+++ b/build/build-debug.bat
@@ -1,4 +1,4 @@
 call "%VS100COMNTOOLS%vsvars32.bat"
 cd VC2010
-msbuild /m:4 /p:Platform=Win32 /p:Configuration=RelWithDebInfo ALL_BUILD.vcxproj
+msbuild /m /p:Platform=Win32 /p:Configuration=RelWithDebInfo ALL_BUILD.vcxproj
 cd ..
\ No newline at end of file
diff --git a/build/build-release.bat b/build/build-release.bat
index 612ee228c..95c15596c 100644
--- a/build/build-release.bat
+++ b/build/build-release.bat
@@ -1,4 +1,4 @@
 call "%VS100COMNTOOLS%vsvars32.bat"
 cd VC2010
-msbuild /m:4 /p:Platform=Win32 /p:Configuration=Release ALL_BUILD.vcxproj
+msbuild /m /p:Platform=Win32 /p:Configuration=Release ALL_BUILD.vcxproj
 cd ..
\ No newline at end of file
diff --git a/build/install-debug.bat b/build/install-debug.bat
index b96ee5a1a..0ae74872e 100644
--- a/build/install-debug.bat
+++ b/build/install-debug.bat
@@ -1,4 +1,4 @@
 call "%VS100COMNTOOLS%vsvars32.bat"
 cd VC2010
-msbuild /m:4 /p:Platform=Win32 /p:Configuration=RelWithDebInfo INSTALL.vcxproj
+msbuild /m /p:Platform=Win32 /p:Configuration=RelWithDebInfo INSTALL.vcxproj
 cd ..
\ No newline at end of file
diff --git a/build/install-release.bat b/build/install-release.bat
index 912b1ddc0..d80bcdbd7 100644
--- a/build/install-release.bat
+++ b/build/install-release.bat
@@ -1,4 +1,4 @@
 call "%VS100COMNTOOLS%vsvars32.bat"
 cd VC2010
-msbuild /m:4 /p:Platform=Win32 /p:Configuration=Release INSTALL.vcxproj
+msbuild /m /p:Platform=Win32 /p:Configuration=Release INSTALL.vcxproj
 cd ..
\ No newline at end of file
diff --git a/build/package-debug.bat b/build/package-debug.bat
index fd0f5a7f2..e6149c56d 100644
--- a/build/package-debug.bat
+++ b/build/package-debug.bat
@@ -1,4 +1,4 @@
 call "%VS100COMNTOOLS%vsvars32.bat"
 cd VC2010
-msbuild /m:4 /p:Platform=Win32 /p:Configuration=RelWithDebInfo PACKAGE.vcxproj
+msbuild /m /p:Platform=Win32 /p:Configuration=RelWithDebInfo PACKAGE.vcxproj
 cd ..
\ No newline at end of file
diff --git a/build/package-release.bat b/build/package-release.bat
index 592704808..3cc3d4af7 100644
--- a/build/package-release.bat
+++ b/build/package-release.bat
@@ -1,4 +1,4 @@
 call "%VS100COMNTOOLS%vsvars32.bat"
 cd VC2010
-msbuild /m:4 /p:Platform=Win32 /p:Configuration=Release PACKAGE.vcxproj
+msbuild /m /p:Platform=Win32 /p:Configuration=Release PACKAGE.vcxproj
 cd ..
\ No newline at end of file