diff --git a/cfgpatch.c b/cfgpatch.c
index 5551351..1b6f94e 100644
--- a/cfgpatch.c
+++ b/cfgpatch.c
@@ -7,7 +7,7 @@
 #include "filedata.h"
 
 /*
- * $ cfgpatch <config-in> <config-out>
+ * $ cfgpatch <config-in>
  */
 int main(int argc, char *argv[])
 {
diff --git a/compress.c b/compress.c
index 00318d8..419cd34 100644
--- a/compress.c
+++ b/compress.c
@@ -8,7 +8,7 @@
 #include "romfile.h"
 
 /*
- * $ compress <rom-0-base> <plain-config> <rom-0-outfile>
+ * $ compress <rom-0-base> <plain-config>
  */
 int main(int argc, char *argv[])
 {
@@ -17,7 +17,10 @@ int main(int argc, char *argv[])
 	struct filedata *config = get_filedata(argv[2]);
 	rom->size = lzs_pack(config->data, config->size, rom->data + 0xC, 0x1000);
 
-	put_romfile(argv[3], rom);
+	char outname[64];
+	strncpy(outname, argv[2], sizeof(outname));
+	strcat(outname, ".comp");
+	put_romfile(outname, rom);
 
 	free(config);
 	free(rom);
diff --git a/configdata.c b/configdata.c
index b0f37d4..e803966 100644
--- a/configdata.c
+++ b/configdata.c
@@ -92,7 +92,7 @@ static struct cfg_patch patcharr[] = {{
 	.code = CFG_NETMASK,
 	.patch = patch_8bit,
 	.offset = 0x2dfe,
-	.min = 0x00, .max = 0x20,
+	.min = 0, .max = 32,
 }, {
 	.code = CFG_NAMESERVER,
 	.patch = patch_ip,
@@ -101,7 +101,7 @@ static struct cfg_patch patcharr[] = {{
 	.code = CFG_MACAGEING,
 	.patch = patch_16bit,
 	.offset = 0x53e8,
-	.min = 0, .max = 0xFFFF,
+	.min = 0, .max = 65536,
 }, {
 	.code = CFG_PORTNAME_MASK,
 	.mask = 0xFFFFFFE0,