diff --git a/Src/LinearSolvers/MLMG/AMReX_MLCurlCurl_K.H b/Src/LinearSolvers/MLMG/AMReX_MLCurlCurl_K.H
index 341aa07104..1621d6ba77 100644
--- a/Src/LinearSolvers/MLMG/AMReX_MLCurlCurl_K.H
+++ b/Src/LinearSolvers/MLMG/AMReX_MLCurlCurl_K.H
@@ -203,12 +203,17 @@ struct CurlCurlDirichletInfo
 #endif
     }
 
+    [[nodiscard]] AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE
+    static bool is_dirichlet_x_edge_1D (int, int, int)
+    {
+        return false;
+    }
+
     [[nodiscard]] AMREX_GPU_HOST_DEVICE AMREX_FORCE_INLINE
     bool is_dirichlet_x_edge (int, int j, int k) const
     {
 #if (AMREX_SPACEDIM == 1)
-        amrex::ignore_unused(j, k);
-        return false;
+        return is_dirichlet_x_edge_1d(0, j, k);
 #elif (AMREX_SPACEDIM == 2)
         amrex::ignore_unused(k);
         return (j == dirichlet_lo[1]) || (j == dirichlet_hi[1]);