diff --git a/ci/zinc/build_aarch64_macos b/ci/zinc/build_aarch64_macos
index 5e97ccc913..00a1a8f971 100755
--- a/ci/zinc/build_aarch64_macos
+++ b/ci/zinc/build_aarch64_macos
@@ -16,5 +16,5 @@ SEARCH_PREFIX="/deps/$TARGET"
   -Drelease \
   -Dstrip \
   -Dtarget="$TARGET" \
-  -Dmcpu="$MCPU" \
+  -Dcpu="$MCPU" \
   -Denable-stage1