diff --git a/.github/scripts/install_bmad.sh b/.github/scripts/install_bmad.sh
index d8d6a3b3c2..ebf8014558 100755
--- a/.github/scripts/install_bmad.sh
+++ b/.github/scripts/install_bmad.sh
@@ -15,7 +15,7 @@ export ACC_PLOT_PACKAGE="pgplot"
 export ACC_PLOT_DISPLAY_TYPE="X"
 export ACC_ENABLE_OPENMP="$USE_MPI"
 export ACC_ENABLE_MPI="$USE_MPI"
-export ACC_FORCE_BUILTIN_MPI="N"
+export ACC_FORCE_BUILTIN_MPI="Y"
 export ACC_ENABLE_GFORTRAN_OPTIMIZATION="Y"
 export ACC_ENABLE_SHARED="$SHARED"
 export ACC_ENABLE_SHARED_ONLY="$SHARED"