diff --git a/.github/workflows/ci-tests-no-openssl.yml b/.github/workflows/ci-tests-no-openssl.yml
index 6cbd3ffc0..536f57d3d 100644
--- a/.github/workflows/ci-tests-no-openssl.yml
+++ b/.github/workflows/ci-tests-no-openssl.yml
@@ -16,6 +16,7 @@ jobs:
     env:
         CC: clang
         CXX: clang++
+        PTLS_CMAKE_OPTS: -DWITH_FUSION=OFF
 
     steps:
       - name: Checkout repository