diff --git a/README.md b/README.md
index ca8d57d..7ab8803 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,12 @@
+# Important!
+
+When using this program and reinstalling many times, do not forget to clear:
+```
+~/.config/<AppName>/
+~/.local/share/<AppName>/
+~/.cache/<AppName>/
+```
+
 # Table of contents
 
 - [Table of contents](#table-of-contents)