diff --git a/contain.c b/contain.c
index 7a90ea8..54fa2ab 100644
--- a/contain.c
+++ b/contain.c
@@ -179,6 +179,7 @@ bool containPrepareEnv(struct nsjconf_t * nsjconf)
 	if (setpriority(PRIO_PROCESS, 0, 19) == -1 && errno != 0) {
 		PLOG_W("setpriority(19)");
 	}
+	setsid();
 	return true;
 }
 
@@ -267,7 +268,7 @@ bool containMountFS(struct nsjconf_t * nsjconf)
 		PLOG_E("CHROOT('/new_root')");
 		return false;
 	}
-	
+
 	if (chdir(nsjconf->cwd) == -1) {
 		PLOG_E("chdir('%s')", nsjconf->cwd);
 		return false;
diff --git a/subproc.c b/subproc.c
index 542ae47..c84d2fe 100644
--- a/subproc.c
+++ b/subproc.c
@@ -238,7 +238,7 @@ void subprocRunChild(struct nsjconf_t *nsjconf, int fd_in, int fd_out, int fd_er
 		return;
 	}
 
-	pid_t pid = syscall(__NR_clone, (uintptr_t)flags, NULL, NULL, NULL, (uintptr_t)0);
+	pid_t pid = syscall(__NR_clone, (uintptr_t) flags, NULL, NULL, NULL, (uintptr_t) 0);
 	if (pid == 0) {
 		subprocNewProc(nsjconf, fd_in, fd_out, fd_err, pipefd[1]);
 	}