diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index bdedddc..7a6eaf7 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -21,7 +21,7 @@ jobs:
     - name: Compile sketch
       uses: ArminJo/arduino-test-compile@v3
       with:
-        arduino-board-fqbn: esp32:esp32:m5stack-atoms3:CDCOnBoot=cdc
+        arduino-board-fqbn: esp32:esp32:m5stack_atoms3:CDCOnBoot=cdc
         platform-url: https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json
         required-libraries: M5AtomS3@1.0.0,M5Unified@0.1.14,M5-Ethernet@4.0.0,M5GFX@0.1.15,SSLClient@1.6.11,UrlEncode@1.0.1
         sketch-names: "*.ino"