diff --git a/lib/sensor_gm1351.c b/lib/sensor_gm1351.c
index e041029..371324c 100644
--- a/lib/sensor_gm1351.c
+++ b/lib/sensor_gm1351.c
@@ -135,13 +135,13 @@ static volatile uint8_t frame_i = 0;
  */
 static const uint32_t digit_segments[4][8] = {
 	{ // digit 1
-		0x00000000, // a
+		0x00000001, // a (segment does not exist, use fake bit to avoid false positive)
 		0x00000040, // b
 		0x00000040, // c
-		0x00000000, // d
-		0x00000000, // e
-		0x00000000, // f
-		0x00000000, // g
+		0x00000001, // d (segment does not exist, use fake bit to avoid false positive)
+		0x00000001, // e (segment does not exist, use fake bit to avoid false positive)
+		0x00000001, // f (segment does not exist, use fake bit to avoid false positive)
+		0x00000001, // g (segment does not exist, use fake bit to avoid false positive)
 		0x00000400, // dp
 	},
 	{ // digit 2
@@ -197,7 +197,6 @@ static const uint8_t number_segments[10] = {
  */
 static uint32_t digit_number[4][10];
 
-
 void sensor_gm1351_setup(void)
 {
 	sensor_gm1351_frame_i = 0; // reset frame index
@@ -300,7 +299,7 @@ static bool sensor_gm1351_decode(void)
 			}
 		}
 		if (number >= LENGTH(digit_number[digit])) {
-			if (digit == 0) {
+			if (0 == digit) {
 				number = 0;
 			} else {
 				return false;
@@ -309,7 +308,6 @@ static bool sensor_gm1351_decode(void)
 		decoded *= 10;
 		decoded += number;
 	}
-
 	sensor_gm1351_decidba = decoded; // save decoded pattern
 	return true;
 }