diff --git a/src/probers/part-id.c b/src/probers/part-id.c
index 9cf7a20..0d9e84d 100644
--- a/src/probers/part-id.c
+++ b/src/probers/part-id.c
@@ -368,6 +368,8 @@ count_entries (PartitionTable *pt)
   return ret;
 }
 
+#include <syslog.h>
+
 /* ---------------------------------------------------------------------------------------------------- */
 
 int
@@ -387,12 +389,16 @@ main (int argc,
   guint partition_number;
   gchar *partition_table_syspath;
 
+  openlog ("udisks-part-id", LOG_NDELAY | LOG_PID, LOG_USER);
+
   udev = NULL;
   devpath = NULL;
   partition_table_device_file = NULL;
   partition_table_syspath = NULL;
   partition_table = NULL;
 
+  syslog (LOG_NOTICE, "a (argc=%d)", argc);
+
   udev = udev_new ();
   if (udev == NULL)
     {
@@ -403,6 +409,7 @@ main (int argc,
   device_file = NULL;
   for (n = 1; n < (guint) argc; n++)
     {
+      syslog (LOG_NOTICE, "b (argv[%d]=`%s')", n, argv[n]);
       if (strcmp (argv[n], "--help") == 0)
         {
           usage (argc, argv);
@@ -422,13 +429,20 @@ main (int argc,
       goto out;
     }
 
+  syslog (LOG_NOTICE, "c (device_file=`%s')", device_file);
+
   device = get_udev_device_from_device_file (udev, device_file);
 
+  syslog (LOG_NOTICE, "d (%p)", device);
+
   partition_table_device_file = get_part_table_device_file (device,
                                                             &partition_table_syspath,
                                                             &partition_offset,
                                                             &partition_alignment_offset,
                                                             &partition_number);
+
+  syslog (LOG_NOTICE, "e (partition_table_device_file=`%s')", partition_table_device_file);
+
   g_printerr ("using device_file=%s syspath=%s, offset=%" G_GUINT64_FORMAT " ao=%" G_GUINT64_FORMAT " and number=%d for %s\n",
               partition_table_device_file,
               partition_table_syspath,
@@ -439,6 +453,8 @@ main (int argc,
 
   fd = open (partition_table_device_file, O_RDONLY);
 
+  syslog (LOG_NOTICE, "f (fd=%d)", fd);
+
   if (fd < 0)
     {
       g_printerr ("Error opening %s: %m\n", partition_table_device_file);