diff --git a/README.md b/README.md
index 448ca1d..20f4c4d 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,7 @@ Some used Opal versions are marked as being infected with malware by SourceForge
 (legacy) library for doing a little bit of everything.
 
 ### Opal
-Voice codec used by e.g. mumble.
+Voice codec
 
 ### t38modem
 Emulates a serial modem from SIP connection
@@ -53,7 +53,7 @@ make install
 #### opal
 ```bash
 ./configure
-make -j5
+make
 make runtest
 make install
 ```