diff --git a/README.md b/README.md
index aedd9174..1945408b 100644
--- a/README.md
+++ b/README.md
@@ -134,7 +134,7 @@ cd build
 ```
 * If you are on a 64-bit system, run:
 ```
-cmake -G "MSYS Makefiles" -D CMAKE_BUILD_TYPE=Release -D ARCH="x86_64" -D BUILD_64=ON -D CMAKE_TOOLCHAIN_FILE=../cmake/64-bit-toolchain.cmake -D MSYS2_FOLDER=c:/msys64 ..
+cmake -G "MSYS Makefiles" -D CMAKE_BUILD_TYPE=Release -D ARCH="x86-64" -D BUILD_64=ON -D CMAKE_TOOLCHAIN_FILE=../cmake/64-bit-toolchain.cmake -D MSYS2_FOLDER=c:/msys64 ..
 ```
 * If you are on a 32-bit system, run:
 ```