diff --git a/Readme b/Readme
index 9ce9340a..97f18a5b 100644
--- a/Readme
+++ b/Readme
@@ -27,7 +27,10 @@ In the src folder do :
 scons
 sudo scons install 
 
-(WARNING : this will install everything needed in /usr/local in place of a regular jack installation so that jack applications will use jackdmp)
+WARNING : 
+
+- this will install everything needed in /usr/local in place of a regular jack installation so that jack applications will use jackdmp
+- you will have to remove the "cache" folder and the ".sconsign.dblite" file before recompiling with different options.
 
 Various compilations options can be seed using scons -h.