diff --git a/net/eth.c b/net/eth.c
index 83d559c..de6d5c6 100644
--- a/net/eth.c
+++ b/net/eth.c
@@ -234,6 +234,9 @@
 				puts (" [PRIME]");
 			}
 
+			if (strchr(dev->name, ' '))
+				puts("\nWarning: eth device name has a space!\n");
+
 			eth_getenv_enetaddr_by_index(eth_number, env_enetaddr);
 
 			if (memcmp(env_enetaddr, "\0\0\0\0\0\0", 6)) {