diff --git a/README.md b/README.md
index 7e3e0b8..2f2792b 100644
--- a/README.md
+++ b/README.md
@@ -14,8 +14,11 @@ go build .
 ## Running instructions
 
 ```bash
-% ./gordle --help                                                                                                                                                              
+% ./gordle --help
+
 Usage of ./gordle:
+  -f string
+        Path to dictionary file with words of length -n. If specified, -n must be specified too (if the latter must not be equal to default value (default "./dictionary/5.txt")
   -n int
         Word size (default 5)
 ```
@@ -28,4 +31,4 @@ go test # [-cover]
 
 ## Dictionaries
 
-To run game you also need dictionary files. By default gordle searches for them in `./dictionary/<n>.txt` file, where `<n>` - number of characters, specified by `-n` flag
+To run game you also need dictionary files. By default gordle searches for them in `./dictionary/<n>.txt` file, where `<n>` - number of characters, specified by `-n` flag. If want to use custom one, provide in `-f` flag path to txt file with strings separated by new line characters