diff --git a/ps/display.c b/ps/display.c

index 1927fd6..e7ab351 100644

--- a/ps/display.c

+++ b/ps/display.c

@@ -357,7 +357,7 @@ static void simple_spew(void){

   if (selection_list && selection_list->typecode == SEL_PID_QUICK) {

     flags |= PROC_PID;

-    pidlist = (pid_t*) malloc(selection_list->n * sizeof(pid_t));

+    pidlist = (pid_t*) malloc((selection_list->n + 1) * sizeof(pid_t));

     if (!pidlist) {

       fprintf(stderr, _("error: not enough memory\n"));

       exit(1);

@@ -366,6 +366,9 @@ static void simple_spew(void){

     for (i = 0; i < selection_list->n; i++) {

       pidlist[i] = selection_list->u[selection_list->n-i-1].pid;

     }

+

+    // delimit the array with nul object (0); RHBZ#2153813

+    pidlist[selection_list->n] = (pid_t)0;

   }

   ptp = openproc(flags, pidlist);