diff --git a/twi/twi_master.c b/twi/twi_master.c
index ec4a271..6dd1dca 100644
--- a/twi/twi_master.c
+++ b/twi/twi_master.c
@@ -10,9 +10,9 @@
 static ret_code_t tw_start(void)
 {
 	/* Send START condition */
-	#if DEBUG_LOG
+#if DEBUG_LOG
 	printf(BG "Send START condition..." RESET);
-	#endif
+#endif
 	TWCR =  (1 << TWINT) | (1 << TWEN) | (1 << TWSTA);
 	
 	/* Wait for TWINT flag to set */
@@ -21,15 +21,15 @@ static ret_code_t tw_start(void)
 	/* Check error */
 	if (TW_STATUS != TW_START && TW_STATUS != TW_REP_START)
 	{
-		#if DEBUG_LOG
+#if DEBUG_LOG
 		printf("\n");
-		#endif
+#endif
 		return TW_STATUS;
 	}
 	
-	#if DEBUG_LOG
+#if DEBUG_LOG
 	printf("SUCCESS\n");
-	#endif
+#endif
 	return SUCCESS;
 }
 
@@ -37,9 +37,9 @@ static ret_code_t tw_start(void)
 static void tw_stop(void)
 {
 	/* Send STOP condition */
-	#if DEBUG_LOG
+#if DEBUG_LOG
 	puts(BG "Send STOP condition." RESET);
-	#endif
+#endif
 	TWCR = (1 << TWINT) | (1 << TWEN) | (1 << TWSTO);
 }
 
@@ -47,9 +47,9 @@ static void tw_stop(void)
 static ret_code_t tw_write_sla(uint8_t sla)
 {
 	/* Transmit slave address with read/write flag */
-	#if DEBUG_LOG
+#if DEBUG_LOG
 	printf(BG "Write SLA + R/W: 0x%02X..." RESET, sla);
-	#endif
+#endif
 	TWDR = sla;
 	TWCR = (1 << TWINT) | (1 << TWEN);
 	
@@ -57,15 +57,15 @@ static ret_code_t tw_write_sla(uint8_t sla)
 	while (!(TWCR & (1 << TWINT)));
 	if (TW_STATUS != TW_MT_SLA_ACK && TW_STATUS != TW_MR_SLA_ACK)
 	{
-		#if DEBUG_LOG
+#if DEBUG_LOG
 		printf("\n");
-		#endif
+#endif
 		return TW_STATUS;
 	}
 
-	#if DEBUG_LOG
+#if DEBUG_LOG
 	printf("SUCCESS\n");
-	#endif
+#endif
 	return SUCCESS;
 }
 
@@ -73,9 +73,9 @@ static ret_code_t tw_write_sla(uint8_t sla)
 static ret_code_t tw_write(uint8_t data)
 {
 	/* Transmit 1 byte*/
-	#if DEBUG_LOG
+#if DEBUG_LOG
 	printf(BG "Write data byte: 0x%02X..." RESET, data);
-	#endif
+#endif
 	TWDR = data;
 	TWCR = (1 << TWINT) | (1 << TWEN);
 	
@@ -83,15 +83,15 @@ static ret_code_t tw_write(uint8_t data)
 	while (!(TWCR & (1 << TWINT)));
 	if (TW_STATUS != TW_MT_DATA_ACK)
 	{
-		#if DEBUG_LOG
+#if DEBUG_LOG
 		printf("\n");
-		#endif
+#endif
 		return TW_STATUS;
 	}
 	
-	#if DEBUG_LOG
+#if DEBUG_LOG
 	printf("SUCCESS\n");
-	#endif
+#endif
 	return SUCCESS;
 }
 
@@ -117,9 +117,9 @@ static uint8_t tw_read(bool read_ack)
 		}
 	}
 	uint8_t data = TWDR;
-	#if DEBUG_LOG
+#if DEBUG_LOG
 	printf(BG "Read data byte: 0x%02X\n" RESET, data);
-	#endif
+#endif
 	return data;
 }
 
@@ -129,9 +129,9 @@ void tw_init(twi_freq_mode_t twi_freq_mode, bool pullup_en)
 	DDRC  |= (1 << TW_SDA_PIN) | (1 << TW_SCL_PIN);
 	if (pullup_en)
 	{
-		#if DEBUG_LOG
+#if DEBUG_LOG
 		puts(BG "Enable pull-up resistor." RESET);
-		#endif
+#endif
 		PORTC |= (1 << TW_SDA_PIN) | (1 << TW_SCL_PIN);
 	}
 	else