diff --git a/.github/workflows/ci_macos_conda.yml b/.github/workflows/ci_macos_conda.yml
index 7f742891..b555674e 100644
--- a/.github/workflows/ci_macos_conda.yml
+++ b/.github/workflows/ci_macos_conda.yml
@@ -52,10 +52,10 @@ jobs:
               mkdir ${{github.workspace}}/build
               cd ${{github.workspace}}/build
               cmake --version
+              set CMAKE_PREFIX_PATH=$CONDA/envs/ci_macos_conda/lib/cmake;$CMAKE_PREFIX_PATH
               cmake .. \
                     -DMayo_BuildTests=ON \
-                    -DMayo_BuildPluginAssimp=ON \
-                    -DQT_DIR=$CONDA/envs/ci_macos_conda/lib/cmake/Qt5
+                    -DMayo_BuildPluginAssimp=ON
               cmake --build . \
                     --config Release \
                     --parallel ${{steps.cpu-cores.outputs.count}}