diff --git a/build.sh b/build.sh
index 39e96dd..b8a1a44 100755
--- dotnet/src/coreclr/build.sh
+++ dotnet/src/coreclr/build.sh
@@ -307,9 +307,9 @@ build_native()
     # Check that the makefiles were created.
     pushd "$intermediatesForBuild"
 
-    echo "Executing $buildTool install -j $NumProc"
+    echo "Executing $buildTool install"
 
-    $buildTool install -j $NumProc
+    $buildTool install
     if [ $? != 0 ]; then
         echo "Failed to build $message."
         exit 1