diff --git a/mk/target.mk b/mk/target.mk
index c049ce5c296..62b9d92a171 100644
--- a/mk/target.mk
+++ b/mk/target.mk
@@ -8,7 +8,7 @@
 # (resp.  corelib), set this flag to 1.  It will cause stage1 to use
 # the snapshot runtime (resp. corelib) rather than the runtime
 # (resp. corelib) from the working directory.
-USE_SNAPSHOT_RUNTIME=0
+USE_SNAPSHOT_RUNTIME=1
 USE_SNAPSHOT_CORELIB=0
 
 define TARGET_STAGE_N