diff --git a/openmc/summary.py b/openmc/summary.py
index 46fec01d5..ad1dd67ca 100644
--- a/openmc/summary.py
+++ b/openmc/summary.py
@@ -1,3 +1,4 @@
+from collections import Iterable
 import numpy as np
 import re
 
@@ -477,10 +478,14 @@ class Summary(object):
 
             # Retrieve the object corresponding to the fill type and ID
             if fill_type == 'normal':
-                if fill_id > 0:
-                    fill = self.get_material_by_id(fill_id)
+                if isinstance(fill_id, Iterable):
+                    fill = [self.get_material_by_id(mat) if mat > 0 else 'void'
+                            for mat in fill_id]
                 else:
-                    fill = 'void'
+                    if fill_id > 0:
+                        fill = self.get_material_by_id(fill_id)
+                    else:
+                        fill = 'void'
             elif fill_type == 'universe':
                 fill = self.get_universe_by_id(fill_id)
             else:
diff --git a/src/initialize.F90 b/src/initialize.F90
index 7457be90d..2c44755d2 100644
--- a/src/initialize.F90
+++ b/src/initialize.F90
@@ -1038,7 +1038,7 @@ contains
     integer, intent(out), allocatable     :: counts(:,:)  ! Target count
     logical, intent(out), allocatable     :: found(:,:)   ! Target found
 
-    integer :: i, j, k, l, m                    ! Loop counters
+    integer :: i, j, k                          ! Loop counters
     type(SetInt)               :: cell_list     ! distribells to track
     type(Universe),    pointer :: univ          ! pointer to universe
     class(Lattice),    pointer :: lat           ! pointer to lattice
diff --git a/src/summary.F90 b/src/summary.F90
index 3fcc3e5c9..deccaddf5 100644
--- a/src/summary.F90
+++ b/src/summary.F90
@@ -107,6 +107,7 @@ contains
 
     integer          :: i, j, k, m
     integer, allocatable :: lattice_universes(:,:,:)
+    integer, allocatable :: cell_materials(:)
     integer(HID_T) :: geom_group
     integer(HID_T) :: cells_group, cell_group
     integer(HID_T) :: surfaces_group, surface_group
@@ -150,10 +151,16 @@ contains
       select case (c%type)
       case (CELL_NORMAL)
         call write_dataset(cell_group, "fill_type", "normal")
-        if (c%material(1) == MATERIAL_VOID) then
-          call write_dataset(cell_group, "material", -1)
+        if (size(c % material) == 1) then
+          call write_dataset(cell_group, "material", &
+               materials(c % material(1)) % id)
         else
-          call write_dataset(cell_group, "material", materials(c%material(1))%id)
+          allocate(cell_materials(size(c % material)))
+          do j = 1, size(c % material)
+            cell_materials(j) = materials(c % material(j)) % id
+          end do
+          call write_dataset(cell_group, "material", cell_materials)
+          deallocate(cell_materials)
         end if
 
       case (CELL_FILL)
diff --git a/tests/test_distribmat/inputs_true.dat b/tests/test_distribmat/inputs_true.dat
index 72d296c9b..48044e287 100644
--- a/tests/test_distribmat/inputs_true.dat
+++ b/tests/test_distribmat/inputs_true.dat
@@ -1 +1 @@
-dcb9a612432305763ad10aaaab3ed095716cbb73f6b357ec180d300ccf365f9781aac7b1f3228c8756ceccf6aa230d0e03cf18ef2c0bc21fba1f082c3d5d6896
\ No newline at end of file
+24a3537446feafcf79fc84d268b43130e9521ad7cccfcf733ba35ca50bf3c644e0b8e91bfdef7bdb4073783197cfdd730d1e459fc622aa3ce6dcf3143c805a1f
\ No newline at end of file
diff --git a/tests/test_distribmat/results_true.dat b/tests/test_distribmat/results_true.dat
index 9481371d8..5e93e4e47 100644
--- a/tests/test_distribmat/results_true.dat
+++ b/tests/test_distribmat/results_true.dat
@@ -1,2 +1,11 @@
 k-combined:
 1.433669E+00 7.069157E-03
+Cell
+	ID             =	11
+	Name           =	
+	Material       =	[2, 3, 2, 2]
+	Region         =	-10000
+	Rotation       =	None
+	Translation    =	None
+	Offset         =	None
+	Distribcell index=	1
diff --git a/tests/test_distribmat/test_distribmat.py b/tests/test_distribmat/test_distribmat.py
index b6bffd90d..61e40e64c 100644
--- a/tests/test_distribmat/test_distribmat.py
+++ b/tests/test_distribmat/test_distribmat.py
@@ -86,7 +86,7 @@ class DistribmatTestHarness(PyAPITestHarness):
         sets_file.inactive = 0
         sets_file.particles = 1000
         sets_file.set_source_space('box', [-1, -1, -1, 1, 1, 1])
-        #sets_file.output = {'summary': True}
+        sets_file.output = {'summary': True}
         sets_file.export_to_xml()
 
 
@@ -116,6 +116,15 @@ class DistribmatTestHarness(PyAPITestHarness):
 #
 #        plots_file.export_to_xml()
 
+    def _get_results(self):
+        outstr = super(DistribmatTestHarness, self)._get_results()
+        su = openmc.Summary('summary.h5')
+        outstr += str(su.get_cell_by_id(11))
+        return outstr
+
+#    def _cleanup(self):
+#        return None
+
 
 if __name__ == '__main__':
     harness = DistribmatTestHarness('statepoint.5.*')