diff --git a/src/audio/mux/mux_ipc3.c b/src/audio/mux/mux_ipc3.c
index a3d3beb4b708..8cfa20293b24 100644
--- a/src/audio/mux/mux_ipc3.c
+++ b/src/audio/mux/mux_ipc3.c
@@ -38,6 +38,7 @@ static int mux_set_values(struct processing_module *mod)
 	struct comp_data *cd = module_get_private_data(mod);
 	struct comp_dev *dev = mod->dev;
 	struct sof_mux_config *cfg = &cd->config;
+	unsigned int routes = 0;
 	unsigned int i;
 	unsigned int j;
 
@@ -76,6 +77,18 @@ static int mux_set_values(struct processing_module *mod)
 			comp_err(dev, "mux component is not able to mix channels");
 			return -EINVAL;
 		}
+
+		/* all mux routes go to the single lookup[0] table */
+		for (i = 0; i < cfg->num_streams; i++) {
+			for (j = 0; j < PLATFORM_MAX_CHANNELS; j++)
+				routes += popcount(cfg->streams[i].mask[j]);
+		}
+
+		if (routes > PLATFORM_MAX_CHANNELS) {
+			comp_err(dev, "%u routes exceed maximum = "
+				 STRINGIFY(PLATFORM_MAX_CHANNELS), routes);
+			return -EINVAL;
+		}
 	}
 
 	for (i = 0; i < cfg->num_streams; i++) {