diff --git a/src/test_streams/main.c b/src/test_streams/main.c
index 15972539..54363f78 100644
--- a/src/test_streams/main.c
+++ b/src/test_streams/main.c
@@ -790,6 +790,7 @@ int main(int argc, char *argv[])
 	if(!generate_sine24_2("sine24-18.raw", 44100.0, 200000, 441.0, 0.50, 4410.0, 0.49, 1.3)) return 1;
 	if(!generate_sine24_2("sine24-19.raw", 44100.0, 200000, 8820.0, 0.70, 4410.0, 0.29, 0.1)) return 1;
 
+	/* WATCHOUT: the size of noise.raw is hardcoded into test/test_flac.sh */
 	if(!generate_noise("noise.raw", 65536 * 8 * 3)) return 1;
 	if(!generate_noise("noise8m32.raw", 32)) return 1;
 	if(!generate_wackywavs()) return 1;