diff --git a/unittest/README.md b/unittest/README.md
new file mode 100644
index 00000000..fdfa5e80
--- /dev/null
+++ b/unittest/README.md
@@ -0,0 +1,28 @@
+# Python script for unit testing RGL grammars
+
+## Usage
+
+```
+python path-to-script.py path/to/testfile.gftest (...)
+```
+
+The script must be located in a sibling directory
+to the RGL `src` directory to work properly.
+
+## Test format
+
+The test file should look something like this:
+
+```
+LangSwe: jag sover i huset
+LangEng: I sleep in the house
+
+LangSwe: huset verkar stort
+Lang: PhrUtt NoPConj (UttS (UseCl (TTAnt TPres ASimul) PPos (PredVP ...
+```
+
+This contains two tests: Every test should be separated by empty lines.
+Every line starts with a language, followed by ":" and the sentence
+(or the abstract syntax tree if the abstract grammar is specified).
+
+You can also see an example in the file [`unittest-example.gftest`](unittest-example.gftest).
diff --git a/unittest/unittest.py b/unittest/unittest.py
index 199e4ca2..f16ef589 100644
--- a/unittest/unittest.py
+++ b/unittest/unittest.py
@@ -5,17 +5,7 @@ Usage: python path-to-script.py path/to/testfile.gftest (...)
 The script must be located in a sibling directory
 to the RGL 'src' directory to work properly.
 
-The test file should look something like this:
-
-    LangSwe: jag sover i huset
-    LangEng: I sleep in the house
-
-    LangSwe: huset verkar stort
-    Lang: PhrUtt NoPConj (UttS (UseCl (TTAnt TPres ASimul) PPos (PredVP ...
-
-This contains two tests: Every test should be separated by empty lines.
-Every line starts with a language, followed by ":" and the sentence
-(or the abstract syntax tree if the abstract grammar is specified).
+For for information see README.md
 """
 
 from __future__ import print_function