diff --git a/examples/wifi/scan/main/scan.c b/examples/wifi/scan/main/scan.c
index 2876fb95a5..243b4a7a98 100644
--- a/examples/wifi/scan/main/scan.c
+++ b/examples/wifi/scan/main/scan.c
@@ -179,6 +179,7 @@ static void wifi_scan(void)
     }
     array_2_channel_bitmap(channel_list, CHANNEL_LIST_SIZE, scan_config);
     esp_wifi_scan_start(scan_config, true);
+    free(scan_config);
 
 #else
     esp_wifi_scan_start(NULL, true);