diff --git a/pyproject.toml b/pyproject.toml
index 1ec45f7e0..413681303 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -91,7 +91,7 @@ LDFLAGS="-Wl,-rpath,${ROOT_DIR}/lib  -Wl,-no_compact_unwind -L${PREFIX}/lib -L${
 CPATH="/usr/local/include:${PREFIX}/include:${HOMEBREW_PREFIX}/include:${ROOT_DIR}/include"
 CPPFLAGS="-isystem ${PREFIX}/include -isystem /usr/local/include"
 LIBS="-lomp"
-FCFLAGS="-mmacos-version-min=${MACOSX_DEPLOYMENT_TARGET} -arch ${ARCH} -fno-underscoring"
+FCFLAGS="-mmacosx-version-min=${MACOSX_DEPLOYMENT_TARGET} -arch ${ARCH} -fno-underscoring"
 FFLAGS="${FCFLAGS}"
 CFLAGS="${FCFLAGS} -Wno-deprecated-non-prototype -arch ${ARCH}"
 CXXFLAGS="${CFLAGS}"