diff --git a/soitool/compressor.py b/soitool/compressor.py
index 57458a6dd3862b8975427f30e86a7a5826b8ad9b..5fd3025d54dda248334677ac9c95e44c17881861 100644
--- a/soitool/compressor.py
+++ b/soitool/compressor.py
@@ -30,7 +30,7 @@ def compress(obj):
 
 def decompress(lzma_compressed_json_string):
     """
-    Decompress a lzma compressed json string.
+    Decompress a lzma-compressed json string.
 
     Decompresses a json compatible python object which is casted from bytes to
     string.