diff --git a/main.go b/main.go
index 04ecc11..c5977b7 100644
--- a/main.go
+++ b/main.go
@@ -6,7 +6,6 @@ import (
 	. "httpprocwatchd/prog"
 	"log"
 	"os"
-	"os/exec"
 	"os/signal"
 	"syscall"
 )
@@ -58,10 +57,6 @@ func main() {
 		return
 	}
 
-	if _, err := exec.LookPath("pgrep"); err != nil {
-		log.Fatalln(ErrPgrepNotFound)
-	}
-
 	conf, err := LoadConfiguration(oConfigPath)
 	if err != nil {
 		log.Fatalf("Cannot load configuration file: %s\n", err)
@@ -89,16 +84,16 @@ func main() {
 	// If we modified a list then let's look for a running program and
 	// send SIGHUP for it to reload a list.
 	if oAddProcess != "" || oRemoveProcess != "" {
-		isup, pid, _ := IsProcessUp("httpprocwatchd")
-		if isup && pid != nil && len(pid) > 1 {
+		pids, _ := GetProcessPIDs("httpprocwatchd")
+		if pids != nil && len(pids) > 1 {
 			var trgt_pid int
-			if pid[0] == os.Getpid() {
-				trgt_pid = pid[1]
+			if pids[0] == os.Getpid() {
+				trgt_pid = pids[1]
 			} else {
-				trgt_pid = pid[0]
+				trgt_pid = pids[0]
 			}
-			proc, err := os.FindProcess(trgt_pid)
-			if err == nil {
+
+			if proc, err := os.FindProcess(trgt_pid); err == nil {
 				proc.Signal(syscall.SIGHUP)
 			}
 		}