fix macos build
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e23d5de..72cc5f9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -50,7 +50,7 @@
 
     - name: Configure
       working-directory: ${{runner.workspace}}/build
-      run: cmake -B. $GITHUB_WORKSPACE
+      run: cmake $GITHUB_WORKSPACE
     - name: Build
       working-directory: ${{runner.workspace}}/build
       run: 	make -j4 all VERBOSE=1