diff --git a/boards/esp32-c3-devkitm-1.json b/boards/esp32-c3-devkitm-1.json
index 5b101a862..90e2306d6 100644
--- a/boards/esp32-c3-devkitm-1.json
+++ b/boards/esp32-c3-devkitm-1.json
@@ -5,7 +5,7 @@
     },
     "core": "esp32",
     "f_cpu": "160000000L",
-    "f_flash": "80000000L",
+    "f_flash": "40000000L",
     "flash_mode": "qio",
     "mcu": "esp32c3",
     "variant": "esp32c3"