1 files changed, 2 insertions, 2 deletions
diff --git a/msvc/build-external-btls.bat b/msvc/build-external-btls.bat
index d4de955a5a0..d3d0e79845b 100755
--- a/msvc/build-external-btls.bat
+++ b/msvc/build-external-btls.bat
@@ -239,12 +239,12 @@ if not ERRORLEVEL == 0 (
 
 if /i "%CMAKE_GENERATOR%" == "ninja" (
     :: Build BTLS using ninja build system.
-    call "%NINJA%" || (
+    call "%NINJA%" -j4 || (
         goto ON_ERROR
     )
 ) else (
     :: Build BTLS using msbuild build system.
-    call "%MSBUILD%" mono-btls.sln /p:Configuration=%VS_CONFIGURATION% /p:Platform=%VS_PLATFORM% /t:%VS_TARGET% /v:m /nologo || (
+    call "%MSBUILD%" mono-btls.sln /p:Configuration=%VS_CONFIGURATION% /p:Platform=%VS_PLATFORM% /t:%VS_TARGET% /v:m /nologo /m || (
         goto ON_ERROR
     )
 )