diff --git a/components/display/st7735.rst b/components/display/st7735.rst
index d42a9550d..f29b34161 100644
--- a/components/display/st7735.rst
+++ b/components/display/st7735.rst
@@ -63,7 +63,7 @@ Configuration variables:
 - **invert_colors** (*Optional*, boolean): Invert LCD colors. Default is false.
 - **eight_bit_color** (*Optional*, boolean): 8bit mode. Default is false. This saves 50% of the buffer required for the display.
 - **reset_pin** (*Optional*, :ref:`Pin Schema <config-pin_schema>`): The RESET pin.
-- **update_interval** (*Optional*, :ref:`config-time`): time between display updates.
+- **update_interval** (*Optional*, :ref:`config-time`): time between display updates. Default is 1s.
 
 Memory notes:
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