diff --git a/var/spack/repos/builtin/packages/ascent/package.py b/var/spack/repos/builtin/packages/ascent/package.py
index df8b9bdcc6a..7181b5a819b 100644
--- a/var/spack/repos/builtin/packages/ascent/package.py
+++ b/var/spack/repos/builtin/packages/ascent/package.py
@@ -446,7 +446,7 @@ def hostconfig(self):
         if "+mpi" in spec:
             mpicc_path = spec["mpi"].mpicc
             mpicxx_path = spec["mpi"].mpicxx
-            mpifc_path = spec["mpi"].mpifc
+            mpifc_path = spec["mpi"].mpifc if "+fortran" in spec else None
             # if we are using compiler wrappers on cray systems
             # use those for mpi wrappers, b/c  spec['mpi'].mpicxx
             # etc make return the spack compiler wrappers
@@ -458,7 +458,8 @@ def hostconfig(self):
             cfg.write(cmake_cache_entry("ENABLE_MPI", "ON"))
             cfg.write(cmake_cache_entry("MPI_C_COMPILER", mpicc_path))
             cfg.write(cmake_cache_entry("MPI_CXX_COMPILER", mpicxx_path))
-            cfg.write(cmake_cache_entry("MPI_Fortran_COMPILER", mpifc_path))
+            if "+fortran" in spec:
+                cfg.write(cmake_cache_entry("MPI_Fortran_COMPILER", mpifc_path))
             mpiexe_bin = join_path(spec["mpi"].prefix.bin, "mpiexec")
             if os.path.isfile(mpiexe_bin):
                 # starting with cmake 3.10, FindMPI expects MPIEXEC_EXECUTABLE
diff --git a/var/spack/repos/builtin/packages/conduit/package.py b/var/spack/repos/builtin/packages/conduit/package.py
index d9980d341db..600f2a23fff 100644
--- a/var/spack/repos/builtin/packages/conduit/package.py
+++ b/var/spack/repos/builtin/packages/conduit/package.py
@@ -452,7 +452,7 @@ def hostconfig(self):
         if "+mpi" in spec:
             mpicc_path = spec["mpi"].mpicc
             mpicxx_path = spec["mpi"].mpicxx
-            mpifc_path = spec["mpi"].mpifc
+            mpifc_path = spec["mpi"].mpifc if "+fortran" in spec else None
             # if we are using compiler wrappers on cray systems
             # use those for mpi wrappers, b/c  spec['mpi'].mpicxx
             # etc make return the spack compiler wrappers
diff --git a/var/spack/repos/builtin/packages/vtk-h/package.py b/var/spack/repos/builtin/packages/vtk-h/package.py
index 5d1c0daa367..c1c0b3ace3b 100644
--- a/var/spack/repos/builtin/packages/vtk-h/package.py
+++ b/var/spack/repos/builtin/packages/vtk-h/package.py
@@ -197,7 +197,8 @@ def hostconfig(self):
         if "+mpi" in spec:
             mpicc_path = spec["mpi"].mpicc
             mpicxx_path = spec["mpi"].mpicxx
-            mpifc_path = spec["mpi"].mpifc
+            has_mpifc = hasattr(spec["mpi"], "mpifc")
+            mpifc_path = spec["mpi"].mpifc if has_mpifc else None
             # if we are using compiler wrappers on cray systems
             # use those for mpi wrappers, b/c  spec['mpi'].mpicxx
             # etc make return the spack compiler wrappers
@@ -209,7 +210,8 @@ def hostconfig(self):
             cfg.write(cmake_cache_entry("ENABLE_MPI", "ON"))
             cfg.write(cmake_cache_entry("MPI_C_COMPILER", mpicc_path))
             cfg.write(cmake_cache_entry("MPI_CXX_COMPILER", mpicxx_path))
-            cfg.write(cmake_cache_entry("MPI_Fortran_COMPILER", mpifc_path))
+            if has_mpifc:
+                cfg.write(cmake_cache_entry("MPI_Fortran_COMPILER", mpifc_path))
             mpiexe_bin = join_path(spec["mpi"].prefix.bin, "mpiexec")
             if os.path.isfile(mpiexe_bin):
                 # starting with cmake 3.10, FindMPI expects MPIEXEC_EXECUTABLE