diff --git a/README.md b/README.md
index 6b579da..08a755a 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@ Suzuki-Trotter-Evolver can be installed as follows:
 ```bash
 git clone https://github.com/Christopher-K-Long/Suzuki-Trotter-Evolver
 cd Suzuki-Trotter-Evolver
-cmake -S . -B build # set optional flags here
+cmake -S . -B build -DCMAKE_BUILD_TYPE=Release # set optional flags here
 sudo cmake --build build --config Release --target install -j $(nproc)
 ```