diff --git a/sound/pci/ice1712/ice1724.c b/sound/pci/ice1712/ice1724.c
index 2213bee..514e153 100644
--- a/sound/pci/ice1712/ice1724.c
+++ b/sound/pci/ice1712/ice1724.c
@@ -118,9 +118,12 @@
 	return (inb(ICEMT1724(ice, RATE)) & VT1724_SPDIF_MASTER) ? 1 : 0;
 }
 
+/*
+ * locking rate makes sense only for internal clock mode
+ */
 static inline int is_pro_rate_locked(struct snd_ice1712 *ice)
 {
-	return ice->is_spdif_master(ice) || PRO_RATE_LOCKED;
+	return (!ice->is_spdif_master(ice)) && PRO_RATE_LOCKED;
 }
 
 /*
@@ -668,16 +671,22 @@
 		return -EBUSY;
 	}
 	if (!force && is_pro_rate_locked(ice)) {
+		/* comparing required and current rate - makes sense for
+		 * internal clock only */
 		spin_unlock_irqrestore(&ice->reg_lock, flags);
 		return (rate == ice->cur_rate) ? 0 : -EBUSY;
 	}
 
-	old_rate = ice->get_rate(ice);
-	if (force || (old_rate != rate))
-		ice->set_rate(ice, rate);
-	else if (rate == ice->cur_rate) {
-		spin_unlock_irqrestore(&ice->reg_lock, flags);
-		return 0;
+	if (force || !ice->is_spdif_master(ice)) {
+		/* force means the rate was switched by ucontrol, otherwise
+		 * setting clock rate for internal clock mode */
+		old_rate = ice->get_rate(ice);
+		if (force || (old_rate != rate))
+			ice->set_rate(ice, rate);
+		else if (rate == ice->cur_rate) {
+			spin_unlock_irqrestore(&ice->reg_lock, flags);
+			return 0;
+		}
 	}
 
 	ice->cur_rate = rate;