diff --git a/sources/io.F90 b/sources/io.F90
index 5e9928f..7fd905c 100644
--- a/sources/io.F90
+++ b/sources/io.F90
@@ -2420,7 +2420,8 @@ module io
                                                   'compressed_size', csize)
       allocate(buffer(csize))
 
-      open (newunit=io, file=file_path, access='stream', action='read')
+      open (newunit=io, file=file_path, access='stream', &
+                        status='old', action='read')
       read (io) buffer
       close (io)
 
@@ -2474,7 +2475,8 @@ module io
       end if
 
     else
-      open (newunit=io, file=file_path, access='stream', action='read')
+      open (newunit=io, file=file_path, access='stream', &
+                        status='old', action='read')
       read (io) array
       close (io)
     end if
@@ -2611,7 +2613,8 @@ module io
           filename = trim(array_file) // '.bin' // file_suffix
           filepath = trim(data_path) // trim(filename)
 
-          open (newunit=io, file=filepath, access='stream')
+          open (newunit=io, file=filepath, access='stream', &
+                            action='write', status='replace')
           write (io) buffer(1:cbytes)
           close (io)
 
@@ -2646,7 +2649,8 @@ module io
       filename = trim(array_file) // '.bin'
       filepath = trim(data_path) // trim(filename)
 
-      open (newunit=io, file=filepath, access='stream')
+      open (newunit=io, file=filepath, access='stream', &
+                        action='write', status='replace')
       write (io) array
       close (io)
 
@@ -5191,7 +5195,7 @@ module io
     write (fname, "('p',i6.6,'_',i5.5,'.xdmf')") isnap, nproc
     write (hname, "('p',i6.6,'_',i5.5,'.h5'  )") isnap, nproc
 
-    open (unit = xdmf, file = fname, status = 'replace')
+    open (unit=xdmf, file=fname, status='replace')
 
 ! write the header
 !
@@ -5379,7 +5383,7 @@ module io
 !
     write (fname, "('p',i6.6,'.xdmf')") isnap
 
-    open (unit = xdmf, file = fname, status = 'replace')
+    open (unit=xdmf, file=fname, status='replace')
 
 ! write the header
 !