diff --git a/README b/README
index b75ef84..589d119 100644
--- a/README
+++ b/README
@@ -23,10 +23,10 @@
 % make
 
 
-Once you have compiled the codec, there will be a test_harmony executable in
+Once you have compiled the codec, there will be a test_opus executable in
 the src/ directory. This can be in the following way:
 
-% ./test_harmony 48000 1 960 80 input.sw output.sw
+% ./test_opus 48000 1 960 80 input.sw output.sw
 
 The arguments are:
 1) The sampling rate (only 48000 supported for now)