diff --git a/README.md b/README.md
index a0277d3..d8e2699 100644
--- a/README.md
+++ b/README.md
@@ -32,6 +32,7 @@ The level of the battery will be shown on the LEDs just after a restart, and the
 For the LEDs use a 1 meter LED strip with 60 red-green-blue WS2812b LEDs.
 Tape the LED strip along the border/edge of the clock.
 Ideally the wall clock has a diameter of 32 cm for the 1 m LED strip to completely fit.
+Otherwise change the number of actually used LEDs in the source files.
 Connect the 5 V power rail of the LED strip to the 5 V pin of the board.
 Connect the DIN signal line of the LED strip to the MISO pin of the micro-controller on PA6.
 SPI is used to efficiently shift out the LED color values to the WS2812b LEDs.
diff --git a/lib/led_ws2812b.h b/lib/led_ws2812b.h
index 85adbf2..b936a9b 100644
--- a/lib/led_ws2812b.h
+++ b/lib/led_ws2812b.h
@@ -21,7 +21,7 @@
 #pragma once
 
 /** number of LEDs on the WS2812b strip */
-#define WS2812B_LEDS 60
+#define WS2812B_LEDS 48
 
 /** @brief setup WS2812b LED driver */
 void ws2812b_setup(void);