diff --git a/libboard_zynq/src/flash/mod.rs b/libboard_zynq/src/flash/mod.rs
index 68dccc4..ddb6d3d 100644
--- a/libboard_zynq/src/flash/mod.rs
+++ b/libboard_zynq/src/flash/mod.rs
@@ -307,6 +307,7 @@ impl Flash<()> {
             .mode_en(true)
             // 2 devices
             .two_mem(true)
+            .sep_bus(true)
             .u_page(false)
             // Linear Addressing Mode
             .lq_mode(true)