diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index b6ffc67..76cf0fc 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -27,11 +27,11 @@ jobs:
             - name: Build
               env:
                 TOOLPREFIX: x86_64-elf- 
-                CC: $(TOOLPREFIX)gcc
-                AS: $(TOOLPREFIX)gas
-                LD: $(TOOLPREFIX)ld
-                OBJCOPY: $(TOOLPREFIX)objcopy
-                OBJDUMP: $(TOOLPREFIX)objdump
+                CC: ${TOOLPREFIX}gcc
+                AS: ${TOOLPREFIX}gas
+                LD: ${TOOLPREFIX}ld
+                OBJCOPY: ${TOOLPREFIX}objcopy
+                OBJDUMP: ${TOOLPREFIX}objdump
               run: |
                   cmake -DCMAKE_ASM_COMPILER=/usr/local/bin/nasm -B build
                   cmake --build build --parallel 2 --verbose