diff --git a/components/platform_console/cmd_i2ctools.c b/components/platform_console/cmd_i2ctools.c
index 39c9f6cd..02c5de42 100644
--- a/components/platform_console/cmd_i2ctools.c
+++ b/components/platform_console/cmd_i2ctools.c
@@ -372,7 +372,6 @@ static int do_i2c_set_display(int argc, char **argv)
 	int result = 0;
 	char * name = NULL;
 	char * driver= NULL;
-	char * err_message=malloc(1);
 	char config_string[200]={};
 	bool bHasi2cConfig = false, bHasSpiConfig=false;
     int nerrors = arg_parse_msg(argc, argv,(struct arg_hdr **)&i2cdisp_args);
@@ -383,20 +382,19 @@ static int do_i2c_set_display(int argc, char **argv)
     char * nvs_item = config_alloc_get(NVS_TYPE_STR, "i2c_config");
 	if (nvs_item && strlen(nvs_item)>0) {
 		bHasi2cConfig=true;
-		FREE_AND_NULL(nvs_item);
 	}
+	FREE_AND_NULL(nvs_item);
 
 	nvs_item = config_alloc_get(NVS_TYPE_STR, "spi_config");
 	if (nvs_item && strlen(nvs_item)>0) {
 		bHasSpiConfig=true;
-		FREE_AND_NULL(nvs_item);
 	}
+	FREE_AND_NULL(nvs_item);
 
 		/* Check "--clear" option */
 	if (i2cdisp_args.clear->count) {
 		log_send_messaging(MESSAGING_WARNING,"Display config cleared");
 		config_set_value(NVS_TYPE_STR, "display_config", "");
-		FREE_AND_NULL(err_message);
 		return 0;
 	}
 	char *buf = NULL;
diff --git a/components/squeezelite/output_i2s.c b/components/squeezelite/output_i2s.c
index 7c8ecc87..16b3ba3f 100644
--- a/components/squeezelite/output_i2s.c
+++ b/components/squeezelite/output_i2s.c
@@ -228,7 +228,7 @@ void output_init_i2s(log_level level, char *device, unsigned output_buf_size, ch
 	char *dac_config = config_alloc_get_str("dac_config", CONFIG_DAC_CONFIG, "model=i2s,bck=" STR(CONFIG_I2S_BCK_IO) 
 											",ws=" STR(CONFIG_I2S_WS_IO) ",do=" STR(CONFIG_I2S_DO_IO) 
 											",sda=" STR(CONFIG_I2C_SDA) ",scl=" STR(CONFIG_I2C_SCL)
-											",mute" STR(CONFIG_MUTE_GPIO));	
+											",mute=" STR(CONFIG_MUTE_GPIO));	
 
 	i2s_pin_config_t i2s_dac_pin, i2s_spdif_pin;											
 	set_i2s_pin(spdif_config, &i2s_spdif_pin);										
@@ -284,7 +284,7 @@ void output_init_i2s(log_level level, char *device, unsigned output_buf_size, ch
 		char model[32] = "i2s";
 		if ((p = strcasestr(dac_config, "model")) != NULL) sscanf(p, "%*[^=]=%31[^,]", model);
 		if ((p = strcasestr(dac_config, "mute")) != NULL) {
-			char mute[8];
+			char mute[8] = "";
 			sscanf(p, "%*[^=]=%7[^,]", mute);
 			mute_control.gpio = atoi(mute);
 			if ((p = strchr(mute, ':')) != NULL) mute_control.active = atoi(p + 1);
@@ -292,7 +292,7 @@ void output_init_i2s(log_level level, char *device, unsigned output_buf_size, ch
 
 		for (int i = 0; adac == &dac_external && dac_set[i]; i++) if (strcasestr(dac_set[i]->model, model)) adac = dac_set[i];
 		res = adac->init(dac_config, I2C_PORT, &i2s_config) ? ESP_OK : ESP_FAIL;
-		
+
 		res |= i2s_driver_install(CONFIG_I2S_NUM, &i2s_config, 0, NULL);
 		res |= i2s_set_pin(CONFIG_I2S_NUM, &i2s_dac_pin);