diff --git a/components/display/st7735.rst b/components/display/st7735.rst
index dfd08f96c..bb015be63 100644
--- a/components/display/st7735.rst
+++ b/components/display/st7735.rst
@@ -38,7 +38,7 @@ There are numerous board types out there. Some initialize differently as well. T
         device_height: 160
         col_start: 0
         row_start: 0
-        eightbitcolor: true
+        eight_bit_color: true
         update_interval: 5s
 
 Configuration variables: