diff --git a/TM1637TinyDisplay.h b/TM1637TinyDisplay.h
index 0ca37a1..49a1a7e 100644
--- a/TM1637TinyDisplay.h
+++ b/TM1637TinyDisplay.h
@@ -230,7 +230,7 @@ class TM1637TinyDisplay {
 	uint8_t m_pinDIO;
 	uint8_t m_brightness;
 	unsigned int m_bitDelay;
-  unsigned int m_scrollDelay;
+	unsigned int m_scrollDelay;
 };
 
 #endif // __TM1637TINYDISPLAY__