diff --git a/.github/workflows/ci_macos_conda.yml b/.github/workflows/ci_macos_conda.yml
index 893f7e97..cfcf95bd 100644
--- a/.github/workflows/ci_macos_conda.yml
+++ b/.github/workflows/ci_macos_conda.yml
@@ -52,12 +52,13 @@ jobs:
               mkdir ${{github.workspace}}/build
               cd ${{github.workspace}}/build
               cmake --version
-              export CMAKE_PREFIX_PATH=$CONDA/envs/ci_macos_conda/lib/cmake/Qt5;$CMAKE_PREFIX_PATH
-              export CMAKE_PREFIX_PATH=$CONDA/envs/ci_macos_conda/lib/cmake/opencascade;$CMAKE_PREFIX_PATH
-              export CMAKE_PREFIX_PATH=$CONDA/envs/ci_macos_conda/lib/cmake/assimp-5.4;$CMAKE_PREFIX_PATH
+              export CMAKE_PREFIX_PATH="$CONDA/envs/ci_macos_conda/lib/cmake/Qt5;$CMAKE_PREFIX_PATH"
+              export CMAKE_PREFIX_PATH="$CONDA/envs/ci_macos_conda/lib/cmake/opencascade;$CMAKE_PREFIX_PATH"
+              export CMAKE_PREFIX_PATH="$CONDA/envs/ci_macos_conda/lib/cmake/assimp-5.4;$CMAKE_PREFIX_PATH"
               cmake .. \
                     -DMayo_BuildTests=ON \
-                    -DMayo_BuildPluginAssimp=ON
+                    -DMayo_BuildPluginAssimp=ON \
+                    -DCMAKE_PREFIX_PATH=$CMAKE_PREFIX_PATH
               cmake --build . \
                     --config Release \
                     --parallel ${{steps.cpu-cores.outputs.count}}