1 files changed, 3 insertions, 3 deletions
diff --git a/backend/pie.c b/backend/pie.c
index 941ed62..76cbb47 100644
--- a/backend/pie.c
+++ b/backend/pie.c
@@ -2781,7 +2781,7 @@ pie_reader_process (Pie_Scanner * scanner, FILE * fp)
 /* --------------------------------- READER PROCESS SIGTERM HANDLER  ------------ */
 
 
-static RETSIGTYPE
+static void
 reader_process_sigterm_handler (int signal)
 {
   DBG (DBG_sane_info, "reader_process: terminated by signal %d\n", signal);
@@ -2896,7 +2896,7 @@ do_cancel (Pie_Scanner * scanner)
 
   scanner->scanning = SANE_FALSE;
 
-  if (scanner->reader_pid != -1)
+  if (sanei_thread_is_valid (scanner->reader_pid))
     {
       DBG (DBG_sane_info, "killing reader_process\n");
       sanei_thread_kill (scanner->reader_pid);
@@ -3703,7 +3703,7 @@ sane_start (SANE_Handle handle)
   scanner->reader_fds = fds[1];
   scanner->reader_pid = sanei_thread_begin( reader_process, (void*)scanner );
 
-  if (scanner->reader_pid == -1)
+  if (!sanei_thread_is_valid (scanner->reader_pid))
     {
       DBG (1, "sane_start: sanei_thread_begin failed (%s)\n",
              strerror (errno));