diff --git a/PCbuild/get_externals.bat b/PCbuild/get_externals.bat
index 8d7b918..e79a8f5 100644
--- a/PCbuild/get_externals.bat
+++ b/PCbuild/get_externals.bat
@@ -7,7 +7,7 @@ if NOT DEFINED EXTERNALS_DIR (set EXTERNALS_DIR=%PCBUILD%\..\externals)
 
 set DO_FETCH=true
 set DO_CLEAN=false
-set IncludeLibffiSrc=false
+set IncludeLibffiSrc=true
 set IncludeTkinterSrc=false
 set IncludeSSLSrc=false
 
