g95 writes 0.232699336-309 instead of 0.000000000E+00

Hi

I compile my code with g95.
I write in a file a variable that has been set to 0.
and when I open the file I see  0.232699336-309  (yes, without the
'E')   instead of the expected 0.000000000E+00.
For information, when I compile with ifort I don't have this error.
This is free fortran format. On a 64bit machine.
Any idea how to avoid this, i.e.  write the expected 0.000000000E+00
or  0.232699336E-309  (with the 'E')    ?