1 files changed, 1 insertions, 1 deletions
diff --git a/README.md b/README.md
index 07b71a5..ae7ce91 100644
--- a/README.md
+++ b/README.md
@@ -62,7 +62,7 @@ yosys-config --exec ln -s "$GHDL_PREFIX/lib/ghdl_yosys.so" --datdir/plugins/ghdl
 
 ```makefile
 ENABLE_GHDL := 1
-GHDL_DIR := <ghdl install dir>
+GHDL_PREFIX := <ghdl install dir>
 ```
 
 - Build and install Yosys.