diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 85c245c..7b58c98 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -55,7 +55,7 @@ jobs:
                       chip: esp32
                     - name: WEMOS-D1-R32-RA02
                       chip: esp32
-                    - name: ttgo-lora32-v21-915
+                    - name: ttgo-lora32-v21_915
                       chip: esp32
                     - name: heltec_ht-ct62
                       chip: esp32c3