--- a/mcs/class/Microsoft.Build.Tasks/Microsoft.Build.Tasks/Csc.cs	2019-02-20 21:17:20.324780985 +0000
+++ b/mcs/class/Microsoft.Build.Tasks/Microsoft.Build.Tasks/Csc.cs	2019-02-20 21:17:43.537165909 +0000
@@ -219,7 +219,7 @@
 
 		protected override string ToolName {
 			get {
-				return MSBuildUtils.RunningOnWindows ? "csc.bat" : "csc.exe";
+				return MSBuildUtils.RunningOnWindows ? "mcs.bat" : "mcs.exe";
 			}
 		}