diff --git a/README.md b/README.md
index 7c29565..54a3472 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@ FSBL code is at https://github.com/Xilinx/embeddedsw/
 
 there:
 ```sh
-cd lib/sw_apps/zynq_fsbl/src/ && make BOARD=zed
+cd lib/sw_apps/zynq_fsbl/src/ && make BOARD=zed CFLAGS=-DFSBL_DEBUG_INFO
 ```
 
 # Building