diff --git a/sound/pci/rme9652/hdspm.c b/sound/pci/rme9652/hdspm.c
index c33f4a5..4add485 100644
--- a/sound/pci/rme9652/hdspm.c
+++ b/sound/pci/rme9652/hdspm.c
@@ -6006,6 +6006,7 @@
 	}
 
 	if (AES32 == hdspm->io_type) {
+		runtime->hw.rates |= SNDRV_PCM_RATE_KNOT;
 		snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
 				&hdspm_hw_constraints_aes32_sample_rates);
 	} else {
@@ -6076,6 +6077,7 @@
 	}
 
 	if (AES32 == hdspm->io_type) {
+		runtime->hw.rates |= SNDRV_PCM_RATE_KNOT;
 		snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
 				&hdspm_hw_constraints_aes32_sample_rates);
 	} else {