diff --git a/bin/pbackup b/bin/pbackup
index 2069e6f..f5d9e23 100755
--- a/bin/pbackup
+++ b/bin/pbackup
@@ -560,7 +560,11 @@ ORDER BY due
         next if $nosys and $job_name =~ /^sys_/;
         next unless lck_can_lock("SERVER.$path_server", LCK_EX);
         next unless lck_can_lock("JOB.$job_name", LCK_EX);
-        $datadir = datadir($job_name);                    # $ROOT/data/X1234
+        if ($type eq 'I') {
+            $datadir = datadir($job_name);                    # $ROOT/data/X1234
+        } else {
+            $datadir = free_datadir();
+        }
         -d $datadir or next;
         my $free = df_cached($datadir) / 1024 / 1024 / 1024;
         if ($free < 2) {