diff --git a/.gitlab/build.yml b/.gitlab/build.yml
index 2d449df9d37a7f6c3c927944d96c1497f02e010f..1cc7ef41182675644ae2d6441357f397e9a7aef4 100644
--- a/.gitlab/build.yml
+++ b/.gitlab/build.yml
@@ -23,7 +23,7 @@ build_hmat:
     SYSTEM: linux
     VERSION: hmat
     LOGNAME: "chameleon-build-${SYSTEM}-${VERSION}"
-    BUILD_OPTIONS: "-DCHAMELEON_USE_CUDA=OFF -DCHAMELEON_USE_MPI=ON -DCHAMELEON_USE_HMAT=ON"
+    BUILD_OPTIONS: "-DCHAMELEON_USE_CUDA=OFF -DCHAMELEON_USE_MPI=ON -DCHAMELEON_USE_HMATOSS=ON"
 
 build_openmp:
   extends: .build_script_linux