diff --git a/systems/mac-arm/config-command-mpi b/systems/mac-arm/config-command-mpi
index bb261fe6..9ddf4997 100644
--- a/systems/mac-arm/config-command-mpi
+++ b/systems/mac-arm/config-command-mpi
@@ -3,7 +3,10 @@
 CXX=mpicxx ../../configure \
 	   --enable-simd=GEN \
 	   --enable-comms=mpi-auto \
-	   --enable-Sp=yes \
+	   --enable-Sp=no \
+	   --disable-fermion-reps \
+	   --disable-gparity \
+	   --with-fftw=$FFTW \
 	   --enable-unified=yes \
 	   --prefix /Users/peterboyle/QCD/vtk/Grid/install \
 	   --with-lime=$CLIME \