diff --git a/.github/workflows/cmake.yml b/.github/workflows/cmake.yml
index 475c7ac6..1e6f48c6 100644
--- a/.github/workflows/cmake.yml
+++ b/.github/workflows/cmake.yml
@@ -140,15 +140,15 @@ jobs:
 
     - name: CMake configure
       if: runner.os == 'Linux'
-      run: CC=clang CXX=clang++ cmake -B ${{ env.BUILD_DIR }} -DBUILD_SHARED_LIBS:${{ matrix.shared_libs }} -DIPHREEQC_ENABLE_MODULE=${{ matrix.enable_module }} -DCMAKE_CXX_STANDARD=20 -DCMAKE_CXX_STANDARD_REQUIRED=ON
+      run: CC=clang CXX=clang++ cmake -B ${{ env.BUILD_DIR }} -DBUILD_SHARED_LIBS=${{ matrix.shared_libs }} -DIPHREEQC_ENABLE_MODULE=${{ matrix.enable_module }} -DCMAKE_CXX_STANDARD=20 -DCMAKE_CXX_STANDARD_REQUIRED=ON
 
     - name: CMake configure
       if: runner.os == 'macOS'
-      run: CC=$(brew --prefix llvm@15)/bin/clang CXX=$(brew --prefix llvm@15)/bin/clang++ cmake -B ${{ env.BUILD_DIR }} -DBUILD_SHARED_LIBS:${{ matrix.shared_libs }} -DIPHREEQC_ENABLE_MODULE=${{ matrix.enable_module }} -DCMAKE_CXX_STANDARD=20 -DCMAKE_CXX_STANDARD_REQUIRED=ON
+      run: CC=$(brew --prefix llvm@15)/bin/clang CXX=$(brew --prefix llvm@15)/bin/clang++ cmake -B ${{ env.BUILD_DIR }} -DBUILD_SHARED_LIBS=${{ matrix.shared_libs }} -DIPHREEQC_ENABLE_MODULE=${{ matrix.enable_module }} -DCMAKE_CXX_STANDARD=20 -DCMAKE_CXX_STANDARD_REQUIRED=ON
 
     - name: CMake configure
       if: runner.os == 'Windows'
-      run: cmake -B ${{ env.BUILD_DIR }} -A x64 -T "ClangCL" -DBUILD_SHARED_LIBS:${{ matrix.shared_libs }} -DIPHREEQC_ENABLE_MODULE=${{ matrix.enable_module }} -DCMAKE_CXX_STANDARD=20 -DCMAKE_CXX_STANDARD_REQUIRED=ON
+      run: cmake -B ${{ env.BUILD_DIR }} -A x64 -T "ClangCL" -DBUILD_SHARED_LIBS=${{ matrix.shared_libs }} -DIPHREEQC_ENABLE_MODULE=${{ matrix.enable_module }} -DCMAKE_CXX_STANDARD=20 -DCMAKE_CXX_STANDARD_REQUIRED=ON
 
     - name: CMake build
       run: cmake --build ${{ env.BUILD_DIR }}