diff --git a/main.c b/main.c
index e10ad44..1d21118 100644
--- a/main.c
+++ b/main.c
@@ -67,9 +67,9 @@ void usage(FILE *fp)
 			"C:\\> nmrpflash.exe -i net0 -f firmware.bin\n"
 #endif
 			"\n"
-			"When using -c, the environment variables IP, PORT, NETMASK\n"
-			"and MAC are set to the device IP address, TFTP port, subnet\n"
-			"mask and MAC address, respectively.\n"
+			"The command specified by -c will have environment variables IP, PORT, NETMASK\n"
+			"and MAC set to the device IP address, TFTP port, subnet mask and MAC address,\n"
+			"respectively.\n"
 			"\n"
 			"nmrpflash %s, Copyright (C) 2016-2024 Joseph C. Lehner\n"
 			"nmrpflash is free software, licensed under the GNU GPLv3.\n"