diff --git a/conda-recipes/smurff/build.sh b/conda-recipes/smurff/build.sh
index 58761329..b63222cc 100644
--- a/conda-recipes/smurff/build.sh
+++ b/conda-recipes/smurff/build.sh
@@ -2,9 +2,9 @@
 
 if [ "$blas_impl" == "mkl" ]
 then
-    SKBUILD_CMAKE_ARGS="-DENABLE_MKL=ON"
+    SKBUILD_CMAKE_ARGS="-DENABLE_MKL=ON -DENABLE_OPENBLAS=OFF"
 else
-    SKBUILD_CMAKE_ARGS="-DENABLE_OPENBLAS=ON"
+    SKBUILD_CMAKE_ARGS="-DENABLE_OPENBLAS=ON -DENABLE_MKL=OFF"
 fi
 
 echo "extra CMAKE_ARGS: $SKBUILD_CMAKE_ARGS"
diff --git a/pyproject.toml b/pyproject.toml
index 55cbc6ab..01dd3f1d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -15,12 +15,6 @@ sdist.include = ["python/smurff/_version.py"]
 cmake.verbose = true
 logging.level = "INFO"
 
-[tool.scikit-build.cmake.define]
-ENABLE_BOOST = "OFF"
-ENABLE_CMDLINE = "OFF"
-ENABLE_TESTS = "OFF"
-ENABLE_OPENBLAS = "ON"
-
 [tool.setuptools_scm]  # Section required
 write_to = "python/smurff/_version.py"
 
@@ -79,6 +73,12 @@ test-command = 'pytest {project}/python/test'
 test-requires = 'parameterized pytest'
 build-verbosity = 3
 
+[tool.cibuildwheel.config-settings]
+"cmake.define.ENABLE_OPENBLAS" = "ON"
+"cmake.define.ENABLE_BOOST" = "OFF"
+"cmake.define.ENABLE_CMDLINE" = "OFF"
+"cmake.define.ENABLE_TEST" = "OFF"
+
 [tool.cibuildwheel.macos]
 before-all = [
      "brew install --formulae openblas eigen ci/highfive.rb",