diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 64915b3f..0af056c6 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -12,10 +12,10 @@ jobs:
         uses: actions/checkout@v2
 
       - name: Install dependencies
-        run: sudo apt-get update && sudo apt-get install git build-essential autoconf automake nasm curl mtools clang -y
+        run: sudo apt-get update && sudo apt-get install git build-essential autoconf automake nasm curl mtools clang llvm -y
 
-      - name: Build the bootloader (gcc)
-        run: ./autogen.sh CC=gcc --enable-werror && make all && make maintainer-clean
+      - name: Build the bootloader (GNU)
+        run: ./autogen.sh --enable-werror && make all && make maintainer-clean
 
-      - name: Build the bootloader (clang)
-        run: ./autogen.sh CC=clang --enable-werror && make all && make maintainer-clean
+      - name: Build the bootloader (LLVM)
+        run: ./autogen.sh TOOLCHAIN=llvm --enable-werror && make all && make maintainer-clean