--- libaitio/src/exec.c	2013/12/05 23:09:00	1.1.2.9
+++ libaitio/src/exec.c	2013/12/05 23:43:46	1.1.2.10
@@ -201,10 +201,9 @@ io_progVacuum(prog_t * __restrict prg, u_int toNum)
 
 	pthread_mutex_lock(&prg->prog_mtx);
 	for (i = array_Size(prg->prog_fds) - 1; prg->prog_cnum > toNum && i > -1; i--)
-		if (array_Get(prg->prog_fds, i) && isset(prg->prog_used, i)) {
+		if (array_Get(prg->prog_fds, i) && isclr(prg->prog_used, i)) {
 			e_pclose(array(prg->prog_fds, i, FILE*));
 			array_Del(prg->prog_fds, i, 0);
-			clrbit(prg->prog_used, i);
 			prg->prog_cnum--;
 			ret++;
 		}