1 files changed, 6 insertions, 2 deletions
diff --git a/nfcommander.c b/nfcommander.c
index 0521fc4..50cbda7 100644
--- a/nfcommander.c
+++ b/nfcommander.c
@@ -42,6 +42,10 @@ int core_manage_fd(int fd, int manage, notification_target_t system){
 		.data.u64 = data.u64
 	};
 
+	if(fd < 0){
+		return 0;
+	}
+
 	if(epoll_ctl(epoll_fd, manage ? EPOLL_CTL_ADD : EPOLL_CTL_DEL, fd, &event)){
 		fprintf(stderr, "Failed to modify epoll instance\n");
 		shutdown_requested = 1;
@@ -119,10 +123,10 @@ int main(int argc, char** argv){
 	}
 	
 	//clean up
-	close(epoll_fd);
-	epoll_fd = -1;
 	reader_free();
 	control_free();
 	command_free();
 	config_free();
+	close(epoll_fd);
+	epoll_fd = -1;
 }