diff --git a/source/display.banner.F90 b/source/display.banner.F90
index 7922ac4bf4..b6db125391 100644
--- a/source/display.banner.F90
+++ b/source/display.banner.F90
@@ -37,15 +37,19 @@ subroutine Display_Banner_Show
     !!}
     use, intrinsic :: ISO_Fortran_Env, only : output_unit
     use            :: Display        , only : displayVerbosity, verbosityLevelSilent
-    use            :: System_Output  , only : stdOutIsATTY
 #ifdef USEMPI
     use            :: MPI_Utilities  , only : mpiSelf
+#else
+    use            :: System_Output  , only : stdOutIsATTY
 #endif
     implicit none
 #ifdef USEMPI
     if (mpiSelf%rank() == 0) then
 #endif
        if (displayVerbosity() > verbosityLevelSilent) then
+          ! Display the logo only if not compiled using MPI. MPI intercepts `stdout` making it impossible for us to know if we are
+          ! outputting to a `TTY` or not
+#ifndef USEMPI
           if (stdOutIsATTY()) then
              ! Display our ASCII art logo. This was created using the `px2ansi` tool (https://github.com/Nellousan/px2ansi) from
              ! https://github.com/galacticusorg/galacticus/blob/master/doc/New_Logo_Galaxy_192_Transparent.png after reducing to
@@ -84,6 +88,7 @@ subroutine Display_Banner_Show
              write (output_unit,*) "[0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m [0m"
              write (output_unit,*) ""
           end if
+#endif
           write (output_unit,*) '             ##                                     '
           write (output_unit,*) '  ####        #                  #                  '
           write (output_unit,*) ' #   #        #             #                       '
diff --git a/source/output.HDF5.open.F90 b/source/output.HDF5.open.F90
index 8ff871b03a..ab67500f6d 100644
--- a/source/output.HDF5.open.F90
+++ b/source/output.HDF5.open.F90
@@ -49,7 +49,7 @@ subroutine Output_HDF5_Open_File(parameters)
     use :: HDF5_Access       , only : hdf5Access
     use :: IO_HDF5           , only : IO_HDF5_Set_Defaults
     use :: ISO_Varying_String, only : var_str             , char                , operator(//)        , extract               , &
-         &                            len                 , operator(==)
+         &                            len                 , operator(==)        , adjustl             , trim
     use :: Input_Parameters  , only : inputParameters     , inputParameter
 #ifdef USEMPI
     use :: MPI_Utilities     , only : mpiSelf
@@ -67,6 +67,7 @@ subroutine Output_HDF5_Open_File(parameters)
     integer(hsize_t        )                :: chunkSize
     integer                                 :: sieveBufferSize
     integer(size_t         )                :: cacheElementsCount, cacheSizeBytes
+    type   (varying_string )                :: outputFileName_   , outputScratchFileName_
 #ifdef USEMPI
     type   (varying_string )                :: fileNamePrefix
 #endif
@@ -75,13 +76,15 @@ subroutine Output_HDF5_Open_File(parameters)
        !![
        <inputParameter>
          <name>outputFileName</name>
+         <variable>outputFileName_</variable>
          <defaultValue>var_str('galacticus.hdf5')</defaultValue>
          <description>The name of the file to which \glc\ results will be written.</description>
          <source>parameters</source>
        </inputParameter>
        <inputParameter>
          <name>outputScratchFileName</name>
-         <defaultValue>outputFileName</defaultValue>
+         <variable>outputScratchFileName_</variable>
+         <defaultValue>outputFileName_</defaultValue>
          <description>The name of the file to which \glc\ results will be written temporarily during runs.</description>
          <source>parameters</source>
        </inputParameter>
@@ -120,6 +123,9 @@ subroutine Output_HDF5_Open_File(parameters)
        </inputParameter>
        !!]
        hdf5CacheSizeBytes=cacheSizeBytes
+       ! Remove leadimg and trailing spaces.
+       outputFileName       =trim(adjustl(outputFileName_       ))
+       outputScratchFileName=trim(adjustl(outputScratchFileName_))
        ! Modify the file name on a per-process basis if running under MPI.
 #ifdef USEMPI
        if (extract(outputFileName       ,len(outputFileName       )-4,len(outputFileName       )) == ".hdf5") then
