diff --git a/include/lc7981.c b/include/lc7981.c
index d48f07b..ef9192f 100644
--- a/include/lc7981.c
+++ b/include/lc7981.c
@@ -120,7 +120,7 @@ uint8_t i,data;
 		lcd_rs_low();
 		lcd_rw_high();
 		_delay_us(1);
-		data = (uint8_t) PIND;
+		data = (uint8_t) LCD_DATA_PIN;
 		lcd_en_low();
 		LCD_DATA_DDR = 0xFF;
 	}
diff --git a/include/lc7981.h b/include/lc7981.h
index 78b1b2b..6beabc7 100644
--- a/include/lc7981.h
+++ b/include/lc7981.h
@@ -44,7 +44,8 @@
 
 
 #define LCD_DATA		PORTD	//!< Port used for data
-#define LCD_DATA_DDR	DDRD	//!< Data-Direction-Register for Data
+#define LCD_DATA_PIN 	PIND	//!< Port used for reading the data
+#define LCD_DATA_DDR	DDRD	//!< Data-Direction-Register for data
 
 // Macros for (un)setting the control pins
 #define lcd_rs_high() (LCD_CTRL |= (1 << LCD_RS))	//!< Set the Register-Select pin high