diff --git a/net/core/dev.c b/net/core/dev.c
index c2ac599..856b6ee 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -4773,7 +4773,7 @@
 		 * is never reached
 		 */
 		WARN_ON(1);
-		err = -EINVAL;
+		err = -ENOTTY;
 		break;
 
 	}
@@ -5041,7 +5041,7 @@
 		/* Set the per device memory buffer space.
 		 * Not applicable in our case */
 	case SIOCSIFLINK:
-		return -EINVAL;
+		return -ENOTTY;
 
 	/*
 	 *	Unknown or private ioctl.
@@ -5062,7 +5062,7 @@
 		/* Take care of Wireless Extensions */
 		if (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST)
 			return wext_handle_ioctl(net, &ifr, cmd, arg);
-		return -EINVAL;
+		return -ENOTTY;
 	}
 }