diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 185e499..bd75051 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -7,8 +7,6 @@ on:
 
 jobs:
   build:
-    runs-on: ${{ matrix.os }}
-
     strategy:
       fail-fast: false
       matrix:
@@ -22,6 +20,8 @@ jobs:
           - name: macOS-latest
             shell: bash
 
+    runs-on: ${{ matrix.os }}
+
     steps:
       - run: git config --global core.autocrlf input
       - uses: actions/checkout@v4
@@ -51,7 +51,7 @@ jobs:
           brew install wxwidgets
 
       - name: Configure project
-        shell: ${{ matrix.os.shell }}
+        shell: ${{ matrix.shell }}
         run: |
             echo "$SHELL"
             echo "$PATH"
@@ -59,7 +59,7 @@ jobs:
             cabal build all --dry-run
 
       - name: Build
-        shell: ${{ matrix.os.shell }}
+        shell: ${{ matrix.shell }}
         run: |
             echo "$SHELL"
             echo "$PATH"