diff --git a/README.md b/README.md
index 7a62898..b111505 100644
--- a/README.md
+++ b/README.md
@@ -12,8 +12,13 @@ docker pull ghcr.io/slackr31337/wyoming-piper-gpu:latest
 Use environment variable to set piper voice
 
 PIPER_VOICE="en_US-lessac-medium"
+
 PIPER_LENGTH="1.0"
+
 PIPER_NOISE="0.667"
+
 PIPER_NOISEW="0.333"
+
 PIPER_SPEAKER="0"
+
 PIPER_SILENCE="1.2"