diff --git a/sound/soc/sdca/sdca_regmap.c b/sound/soc/sdca/sdca_regmap.c
index 5cb3048ea8cf..72f893e00ff5 100644
--- a/sound/soc/sdca/sdca_regmap.c
+++ b/sound/soc/sdca/sdca_regmap.c
@@ -196,7 +196,7 @@ int sdca_regmap_mbq_size(struct sdca_function_data *function, unsigned int reg)
 
 	control = function_find_control(function, reg);
 	if (!control)
-		return false;
+		return -EINVAL;
 
 	return clamp_val(control->nbits / BITS_PER_BYTE, sizeof(u8), sizeof(u32));
 }