1 files changed, 1 insertions, 1 deletions

diff --git a/README.md b/README.md
index 47201dc5..ca0ef1e5 100644
--- a/README.md
+++ b/README.md
@@ -195,7 +195,7 @@ Additional notes for building nextpnr
 The following runs a debug build of the iCE40 architecture without GUI, without Python support, without the HeAP analytic placer and only HX1K support:
 
 ```
-cmake . -DARCH=ice40 -DCMAKE_BUILD_TYPE=Debug -DBUILD_PYTHON=OFF  -DBUILD_HEAP=OFF -DICE40_HX1K_ONLY=1
+cmake . -DARCH=ice40 -DCMAKE_BUILD_TYPE=Debug -DBUILD_PYTHON=OFF -DICE40_HX1K_ONLY=1
 make -j$(nproc)
 ```