diff --git a/lib/7segment.c b/lib/7segment.c
index 2b37fd5..4c4b9d3 100644
--- a/lib/7segment.c
+++ b/lib/7segment.c
@@ -29,7 +29,7 @@ uint8_t digit_to_binary(bool period, uint8_t digit) {
         case 8: return val | 0x7f;
         case 9: return val | 0x6f;
         // by default draw a dash
-        default: return 0x01000000;
+        default: return 0b01000000;
     }
 }