diff --git a/docs/wake_word_engine/ESP_Wake_Words_Customization.md b/docs/wake_word_engine/ESP_Wake_Words_Customization.md
index a810f16..1bcaafe 100644
--- a/docs/wake_word_engine/ESP_Wake_Words_Customization.md
+++ b/docs/wake_word_engine/ESP_Wake_Words_Customization.md
@@ -38,7 +38,7 @@ As mentioned above, you can provide your own training corpus for Espressif. Belo
 
 1. Audio file format
 	- Sample rate: 16 kHz
-	- Encoding: 6-bit signed int
+	- Encoding: 16-bit signed int
 	- Channel: mono
 	- Format: WAV	
 
@@ -61,4 +61,4 @@ As mentioned above, you can provide your own training corpus for Espressif. Belo
 
 #### 2.2 Hareware Design Guidelines
 
-1. Please refer to *Espressif MIC Design Guidelines*.
\ No newline at end of file
+1. Please refer to *Espressif MIC Design Guidelines*.