diff --git a/Source/Filter/Filter.cpp b/Source/Filter/Filter.cpp
index 7ea0003e291..23893d5786b 100644
--- a/Source/Filter/Filter.cpp
+++ b/Source/Filter/Filter.cpp
@@ -101,7 +101,6 @@ void Filter::DoFilter (const Box& tbx,
     )
     Dim3 slen_local = slen;
 
-#if AMREX_SPACEDIM == 3
     AMREX_PARALLEL_FOR_4D ( tbx, ncomp, i, j, k, n,
     {
         Real d = 0.0;
@@ -116,6 +115,7 @@ void Filter::DoFilter (const Box& tbx,
         for         (int iz=0; iz < slen_local.z; ++iz){
             for     (int iy=0; iy < slen_local.y; ++iy){
                 for (int ix=0; ix < slen_local.x; ++ix){
+#if AMREX_SPACEDIM == 3
                     Real sss = sx[ix]*sy[iy]*sz[iz];
                     d += sss*( src_zeropad(i-ix,j-iy,k-iz,scomp+n)
                               +src_zeropad(i+ix,j-iy,k-iz,scomp+n)
@@ -125,63 +125,23 @@ void Filter::DoFilter (const Box& tbx,
                               +src_zeropad(i+ix,j-iy,k+iz,scomp+n)
                               +src_zeropad(i-ix,j+iy,k+iz,scomp+n)
                               +src_zeropad(i+ix,j+iy,k+iz,scomp+n));
-                }
-            }
-        }
-
-        dst(i,j,k,dcomp+n) = d;
-    });
 #elif AMREX_SPACEDIM == 2
-    AMREX_PARALLEL_FOR_4D ( tbx, ncomp, i, j, k, n,
-    {
-        Real d = 0.0;
-
-        // Pad source array with zeros beyond ghost cells
-        // for out-of-bound accesses due to large-stencil operations
-        const auto src_zeropad = [src] (const int jj, const int kk, const int ll, const int nn) noexcept
-        {
-            return src.contains(jj,kk,ll) ? src(jj,kk,ll,nn) : 0.0_rt;
-        };
-
-        for         (int iz=0; iz < slen_local.z; ++iz){
-            for     (int iy=0; iy < slen_local.y; ++iy){
-                for (int ix=0; ix < slen_local.x; ++ix){
                     Real sss = sx[ix]*sy[iy];
                     d += sss*( src_zeropad(i-ix,j-iy,k,scomp+n)
                               +src_zeropad(i+ix,j-iy,k,scomp+n)
                               +src_zeropad(i-ix,j+iy,k,scomp+n)
                               +src_zeropad(i+ix,j+iy,k,scomp+n));
-                }
-            }
-        }
-
-        dst(i,j,k,dcomp+n) = d;
-    });
 #elif AMREX_SPACEDIM == 1
-    AMREX_PARALLEL_FOR_4D ( tbx, ncomp, i, j, k, n,
-    {
-        Real d = 0.0;
-
-        // Pad source array with zeros beyond ghost cells
-        // for out-of-bound accesses due to large-stencil operations
-        const auto src_zeropad = [src] (const int jj, const int kk, const int ll, const int nn) noexcept
-        {
-            return src.contains(jj,kk,ll) ? src(jj,kk,ll,nn) : 0.0_rt;
-        };
-
-        for         (int iz=0; iz < slen_local.z; ++iz){
-            for     (int iy=0; iy < slen_local.y; ++iy){
-                for (int ix=0; ix < slen_local.x; ++ix){
                     Real sss = sx[ix];
                     d += sss*( src_zeropad(i-ix,j,k,scomp+n)
                               +src_zeropad(i+ix,j,k,scomp+n));
+#endif
                 }
             }
         }
 
         dst(i,j,k,dcomp+n) = d;
     });
-#endif
 }
 
 #else