diff --git a/src/packet.c b/src/packet.c
index 0ea54eb..fcee3ad 100644
--- a/src/packet.c
+++ b/src/packet.c
@@ -109,7 +109,7 @@ enum FD_STATE read_packet_from_udp (int fd, struct buffer_packet* bp, struct udp
     return FDS_ERR;
   }
   if (nread == -1 && errno == EAGAIN) return FDS_AGAIN;
-  if (nread == -1 && errno == EAGAIN) return FDS_AGAIN;
+  if (nread == 0) return FDS_AGAIN;
   if (nread == -1) {
     fprintf(stderr, "A system error occured\n");
     return FDS_ERR;