diff --git a/src/utility.c b/src/utility.c
index 3ad9f48..11d2308 100644
--- a/src/utility.c
+++ b/src/utility.c
@@ -15,10 +15,10 @@ uint8_t bit_count(uint8_t b) {
 
 uint16_t lfsr_update(void) {
 	static uint16_t lfsr = 0xF00D;
-	uint16_t bit;
 
-    bit = ((lfsr >> 0) ^ (lfsr >> 2) ^ (lfsr >> 3) ^ (lfsr >> 5)) & 1;
-    lfsr = (lfsr >> 1) | (bit << 15);
+	lfsr ^= lfsr >> 7;
+	lfsr ^= lfsr << 9;
+	lfsr ^= lfsr >> 13;
 
     return lfsr;
 }