diff -ur elilo.a/glue_netfs.c elilo.b/glue_netfs.c
--- elilo.a/glue_netfs.c	2009-02-05 15:22:00.000000000 +0100
+++ elilo.b/glue_netfs.c	2009-02-05 20:53:11.000000000 +0100
@@ -143,6 +143,7 @@
 	UINTN m;
 	CHAR16 ip_var[64], str[64];
 	UINT8 *ip;
+ 	INTN len;
 
 	if (config == NULL || kname == NULL || maxlen < 1) return EFI_INVALID_PARAMETER;
 
@@ -191,6 +192,8 @@
 #  endif            
 
 #  define CONFIG_EXTENSION L".conf\0"
+
+		len = StrLen(CONFIG_ARCH_EXTENSION) + 1;
 		/*
 		 * will try machine/subnet specific files first.
 		 * the filenames are constructed based on the IP(v4) address
@@ -200,19 +203,19 @@
 		StrnCpy(config[0].fname+8, CONFIG_EXTENSION, 6);
 
 		StrnCpy(config[1].fname, str, maxlen-1);
-		StrnCpy(config[1].fname+6, CONFIG_ARCH_EXTENSION, 11);
+		StrnCpy(config[1].fname+6, CONFIG_ARCH_EXTENSION, len);
 
 		StrnCpy(config[2].fname, str, maxlen-1);
 		StrnCpy(config[2].fname+6, CONFIG_EXTENSION, 6);
 
 		StrnCpy(config[3].fname, str, maxlen-1);
-		StrnCpy(config[3].fname+4, CONFIG_ARCH_EXTENSION, 11);
+		StrnCpy(config[3].fname+4, CONFIG_ARCH_EXTENSION, len);
 
 		StrnCpy(config[4].fname, str, maxlen-1);
 		StrnCpy(config[4].fname+4, CONFIG_EXTENSION, 6);
-                
+
 		StrnCpy(config[5].fname, str, maxlen-1);
-		StrnCpy(config[5].fname+2, CONFIG_ARCH_EXTENSION, 11);
+		StrnCpy(config[5].fname+2, CONFIG_ARCH_EXTENSION, len);
 
 		StrnCpy(config[6].fname, str, maxlen-1);
 		StrnCpy(config[6].fname+2, CONFIG_EXTENSION, 6);