diff --git a/lib/7segment.c b/lib/7segment.c
index 1e99749..6177dc2 100644
--- a/lib/7segment.c
+++ b/lib/7segment.c
@@ -7,7 +7,7 @@
  * 0  1  2  3  4  5  6  7
  * 
  * d1 d2 d3 d4
- * 1  2  3  4
+ * 0  1  2  3
 */
 
 void set_display_raw(volatile uint8_t * header, uint8_t data) {