Update README.md
diff --git a/verilog/dv/README.md b/verilog/dv/README.md
index 06a6dbb..46fa6a4 100644
--- a/verilog/dv/README.md
+++ b/verilog/dv/README.md
@@ -80,7 +80,7 @@
 First, you will need to export a number of environment variables: 
 
 ```bash
-export PDK_PATH=<pdk-location/sky130A>
+export PDK_ROOT=<pdk-location>
 export CARAVEL_ROOT=<caravel_root>
 export UPRJ_ROOT=<user_project_root>
 ```