diff --git a/build/sdk-darwin-x86.atree b/build/sdk-darwin-x86.atree
index 19be137b7..120fff06f 100644
--- a/build/sdk-darwin-x86.atree
+++ b/build/sdk-darwin-x86.atree
@@ -3,6 +3,7 @@
 
 # swt
 prebuilt/darwin-x86/swt/swt.jar tools/lib/x86/swt.jar
+prebuilt/darwin-x86_64/swt/swt.jar tools/lib/x86_64/swt.jar
 
 
 # JetCreator (only available on mac/windows)