diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index 8d7fee2970..20d14766f7 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -27,7 +27,7 @@ jobs:
         working-directory: src
       - name: Set ENV
         run: |
-          echo "GNUMAKEFLAGS=-j$((1 + $(sysctl -n hw.activecpu)))" >> $GITHUB_ENV
+          echo "MAKEFLAGS=-j$((1 + $(sysctl -n hw.activecpu)))" >> $GITHUB_ENV
       - run: ./autogen.sh
         working-directory: src
       - name: Run configure
diff --git a/.github/workflows/yjit-macos.yml b/.github/workflows/yjit-macos.yml
index fbaa232900..c19f623337 100644
--- a/.github/workflows/yjit-macos.yml
+++ b/.github/workflows/yjit-macos.yml
@@ -34,7 +34,7 @@ jobs:
         working-directory: src
       - name: Set ENV
         run: |
-          echo "GNUMAKEFLAGS=-j$((1 + $(sysctl -n hw.activecpu)))" >> $GITHUB_ENV
+          echo "MAKEFLAGS=-j$((1 + $(sysctl -n hw.activecpu)))" >> $GITHUB_ENV
       - run: ./autogen.sh
         working-directory: src
       - name: Run configure