diff --git a/README-OSX.md b/README-OSX.md
index 0c9604fe..046ff01e 100644
--- a/README-OSX.md
+++ b/README-OSX.md
@@ -8,10 +8,12 @@ brew install asn1c
 
 # Building for OS X
 
+* TODO: which dependencies can be fetched via "brew" and which have to be compiled manually?
+
 ## Build libetpan
 
 ```
-cd pEpEngine
+cd pEpEngine   <--- huh? to build libetpan???
 autoreconf -vfi
 ./configure
 make
diff --git a/README.txt b/README.txt
index 9d3205cb..839219d2 100644
--- a/README.txt
+++ b/README.txt
@@ -61,6 +61,7 @@ p≡p engine is depending on the following FOSS libraries:
 * Asn1c, download from https://lionet.info/soft/asn1c-0.9.27.tar.gz
        (Debian's version 0.9.24 does not work)
 
+* yml2, which needs lxml (where to get?)
 
 2. Building p≡p engine
 ----------------------