diff --git a/libraries/SD/src/sd_diskio.cpp b/libraries/SD/src/sd_diskio.cpp
index 88542a95f7a1a9088b0b836fbcb8b19ac71538f9..0e1252fdfec0e45210866305c7e7e380c2663fc7 100644
--- a/libraries/SD/src/sd_diskio.cpp
+++ b/libraries/SD/src/sd_diskio.cpp
@@ -703,6 +703,7 @@ uint8_t sdcard_uninit(uint8_t pdrv)
     esp_err_t err = ESP_OK;
     if (card->base_path) {
         err = esp_vfs_fat_unregister_path(card->base_path);
+        free(card->base_path);
     }
     free(card);
     return err;