diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index c9ac91c..63c8e9c 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -45,7 +45,7 @@ jobs:
         pio run -e arduino
         pio run -e vkm-b-controller
         pio run -e vkm-b-periphery
-        mv bin/fw/build/arduino/firmware.bin bin/arduino-leonardo.bin
+        mv bin/fw/build/arduino/firmware.hex bin/arduino-leonardo.hex
         mv bin/fw/build/vkm-b-controller/firmware.bin bin/vkm-b-controller.bin
         mv bin/fw/build/vkm-b-periphery/firmware.bin bin/vkm-b-periphery.bin
     - name: Upload Artifact
diff --git a/appveyor.yml b/appveyor.yml
index 71d7dd5..0905886 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -19,5 +19,5 @@ build_script:
  - c:\msys64\usr\bin\bash -c "PATH=/mingw64/bin:/bin:/usr/bin make -f Makefile.mingw clean all"
 
 artifacts:
- - path: %APPVEYOR_BUILD_FOLDER%\bin\vkvm.exe
+ - path: $(APPVEYOR_BUILD_FOLDER)\bin\vkvm.exe
    name: vkvm-binaries