diff --git a/builtin-fast-export.c b/builtin-fast-export.c
index 2136aadfd7831828ee29fbfa9ae7974c65271dee..ef27eee71bdef2cac6f751e07b1da71588989b03 100755 (executable)
--- a/builtin-fast-export.c
+++ b/builtin-fast-export.c
mark_object(object);
printf("blob\nmark :%d\ndata %lu\n", last_idnum, size);
- if (fwrite(buf, size, 1, stdout) != 1)
+ if (size && fwrite(buf, size, 1, stdout) != 1)
die ("Could not write blob %s", sha1_to_hex(sha1));
printf("\n");