diff --git a/src/main.c b/src/main.c
index 536e204..8b2bd1b 100644
--- a/src/main.c
+++ b/src/main.c
@@ -287,13 +287,13 @@ static void lo_generate(uint32_t *buf, size_t len, double freq, unsigned phase)
 		unsigned bits = 0;
 
 		for (int j = 0; j < 32; j++) {
+			bits <<= 1;
 #if LO_DITHER
 			int noise = (rnd_next() >> 3) - (rnd_next() >> 3);
 			bits |= (accum + noise) >> 31;
 #else
 			bits |= accum >> 31;
 #endif
-			bits <<= 1;
 			accum += step;
 		}