diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 1cfcf43..b99846a 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -12,7 +12,7 @@ jobs:
             - name: Set up MSVC
               uses: ilammy/msvc-dev-cmd@v1
             - name: Configure CMake
-              run: cmake -B build -S . -G "Visual Studio 17 2022" -A x64 -DCMAKE_BUILD_TYPE=Release -DCMAKE_SYSTEM_VERSION=10.0.26100.0
+              run: cmake -B build -S . -G "Visual Studio 17 2022" -A x64 -DCMAKE_BUILD_TYPE=Release -DCMAKE_SYSTEM_VERSION="10.0.26100.0"
             - name: Build
               run: cmake --build build --config Release --target bnusio --verbose
             - uses: actions/upload-artifact@v4