diff --git a/src/main.rs b/src/main.rs
index 19e0b3d..347eebe 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1092,7 +1092,7 @@ const APP: () = {
                 // shift cos/sin before multiplying to avoid i64 multiplication
                 signal.0 =
                     adc_samples[0][i] as i16 as i32 * shift_round(cos, 16);
-                signal.0 =
+                signal.1 =
                     adc_samples[0][i] as i16 as i32 * shift_round(sin, 16);
 
                 signal.0 =