diff --git a/nubus-to-ztex-gateware/VintageBusFPGA_Common b/nubus-to-ztex-gateware/VintageBusFPGA_Common
index de49547..2743816 160000
--- a/nubus-to-ztex-gateware/VintageBusFPGA_Common
+++ b/nubus-to-ztex-gateware/VintageBusFPGA_Common
@@ -1 +1 @@
-Subproject commit de495473a94e0aabb9f498bdc996bdeab15195f7
+Subproject commit 274381601bd4e0bb6a7075985627a345938e69c9
diff --git a/nubus-to-ztex-gateware/sdram_init.py b/nubus-to-ztex-gateware/sdram_init.py
index 02374f9..de0e881 100644
--- a/nubus-to-ztex-gateware/sdram_init.py
+++ b/nubus-to-ztex-gateware/sdram_init.py
@@ -1,8 +1,8 @@
 #!/usr/bin/env python3
 from migen import *
 
-from wb_master import *
-from wb_master import _WRITE_CMD, _WAIT_CMD, _DONE_CMD
+from VintageBusFPGA_Common.wb_master import *
+from VintageBusFPGA_Common.wb_master import _WRITE_CMD, _WAIT_CMD, _DONE_CMD
 
 
 dfii_control_sel     = 0x01