diff --git a/src/ecopcr.c b/src/ecopcr.c
index 6dbfcb2..7a2788d 100644
--- a/src/ecopcr.c
+++ b/src/ecopcr.c
@@ -67,7 +67,7 @@ static void ExitUsage(stat)
         int stat;
 {
         PP      "usage: ecoPCR [-1 oligo1] [-2 oligo2] [-l value] [-L value] [-e value] [-k] datafile\n");
-        PP      "type \"apat -h\" for help\n");
+        PP      "type \"ecoPCR -h\" for help\n");
 
         if (stat)
             exit(stat);