diff --git a/src/RawConnection.php b/src/RawConnection.php
index 89728a4..1547851 100644
--- a/src/RawConnection.php
+++ b/src/RawConnection.php
@@ -149,17 +149,15 @@ class RawConnection {
 			return;
 		}
 		if ($terminate) {
-			$status = proc_get_status($this->process);
-			$ppid = $status['pid'];
-			$pids = preg_split('/\s+/', `ps -o pid --no-heading --ppid $ppid`);
-			foreach($pids as $pid) {
-				if(is_numeric($pid)) {
-					// try for case that posix_ functions are not available
-					try {
+			// if for case that posix_ functions are not available
+			if (function_exists('posix_kill')) {
+				$status = proc_get_status($this->process);
+				$ppid = $status['pid'];
+				$pids = preg_split('/\s+/', `ps -o pid --no-heading --ppid $ppid`);
+				foreach($pids as $pid) {
+					if(is_numeric($pid)) {
 						//9 is the SIGKILL signal
 						posix_kill($pid, 9);
-					} catch (\Exception $e) {
-						throw $e;
 					}
 				}
 			}