diff --git a/pickit2_spi.c b/pickit2_spi.c
index e997163..ebf0713 100644
--- a/pickit2_spi.c
+++ b/pickit2_spi.c
@@ -206,8 +206,8 @@
 	 * and always assume the worst case scenario of 20 bytes command overhead.
 	 */
 	if (writecnt + readcnt + 20 > CMD_LENGTH) {
-		msg_perr("\nTotal packetsize (%i) is greater than 64 supported, aborting.\n",
-			 writecnt + readcnt + 20);
+		msg_perr("\nTotal packetsize (%i) is greater than %i supported, aborting.\n",
+			 writecnt + readcnt + 20, CMD_LENGTH);
 		return 1;
 	}