diff --git a/README.md b/README.md
index a297481..89c64d8 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,8 @@ make
 
 ## Usage
 
+Please make sure to `export ZEIT_DB=~/.config/zeit.db` (or whatever location you would like to have the zeit database at).
+
 ### Start tracking
 
 ```