diff --git a/sources/io.F90 b/sources/io.F90
index 74c9c51..9bd881d 100644
--- a/sources/io.F90
+++ b/sources/io.F90
@@ -110,7 +110,7 @@ module io
 #ifdef HDF5
 ! a flag to determine if XDMF files should be generated
 !
-  logical           , save :: with_xdmf   = .false.
+  logical           , save :: with_xdmf = .false.
 #endif /* HDF5 */
 
 ! the compression format and level of the XML+binary files
@@ -347,6 +347,7 @@ module io
               call print_message(loc, &
                                   "Could not check if the filter is available!")
             end if
+            with_xdmf = .false.
           case("zstd", "zstandard")
             call h5zfilter_avail_f(H5Z_ZSTANDARD, test, status)
             if (status == 0) then
@@ -361,6 +362,7 @@ module io
               call print_message(loc, &
                                   "Could not check if the filter is available!")
             end if
+            with_xdmf = .false.
           case("zfp")
             call h5zfilter_avail_f(H5Z_ZFP, test, status)
             if (status == 0) then
@@ -386,6 +388,7 @@ module io
               call print_message(loc, &
                                   "Could not check if the filter is available!")
             end if
+            with_xdmf = .false.
           case default
           end select