diff --git a/doc/faqs/faqs.rst b/doc/faqs/faqs.rst
index 9a3cd2f8..bb27caac 100644
--- a/doc/faqs/faqs.rst
+++ b/doc/faqs/faqs.rst
@@ -3,6 +3,7 @@ Frequently-Asked Questions
 
 wien2k: FERMI ERROR when running `x lapw2 -almd -band`
 ------------------------------------------------------
+
 In some versions of Wien2k, there is a problem in running `x lapw2 -almd -band`.
 
 A hack solution is as follows:
@@ -22,10 +23,18 @@ the parameters as desired.
 
 x optic does not write a case.pmat file
 ---------------------------------------
+
 Make sure that you set line 6 to "ON" and put a "1" to the following line.
 The "1" is undocumented in Wien2k, but needed to have `case.pmat` written.
 However, we are working on reading directly the `case.mommat2` file.
 
+No module named pytriqs.*** error when running a script
+-------------------------------------------------------
+
+Make sure that have propaly build, tested and installed TRIQS and DFTTools
+using, make, make test and make install. Additionally, you should always
+use pytriqs to call your scripts, e.g. pytriqs yourscript.py
+
 Why is my calculation not working?
 ----------------------------------