diff --git a/README.md b/README.md
index 47dc4136e..4c108e146 100644
--- a/README.md
+++ b/README.md
@@ -9,12 +9,12 @@ RunUO Git Repository
 
 Typical Windows Build
 
-PS C:\runuo> C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc /optimize /unsafe /t:exe /out:RunUO.exe /win32icon:Server\runuo.ico /d:NEWTIMERS /d:NEWPARENT /recurse:Server\\*.cs
+PS C:\runuo> C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc /optimize /unsafe /t:exe /out:RunUO.exe /win32icon:Server\runuo.ico /d:NEWTIMERS /d:NEWPARENT /reference:System.Drawing /recurse:Server\\*.cs
 
 
 Typical Linux Build (MONO)
 
-~/runuo$ mcs -optimize+ -unsafe -t:exe -out:RunUO.exe -win32icon:Server/runuo.ico -nowarn:219,414 -d:NEWTIMERS -d:NEWPARENT -d:MONO -recurse:Server/*.cs
+~/runuo$ mcs -optimize+ -unsafe -t:exe -out:RunUO.exe -win32icon:Server/runuo.ico -nowarn:219,414 -d:NEWTIMERS -d:NEWPARENT -d:MONO -reference:System.Drawing -recurse:Server/*.cs
 
 
 zlib is required for certain functionality. Windows zlib builds are packaged with releases and can also be obtained separately here: https://github.com/msturgill/zlib/releases/latest