diff --git a/.gitlab/ci/ubuntu_cpp.gitlab-ci.yml b/.gitlab/ci/ubuntu_cpp.gitlab-ci.yml
index 6e757e4520b85ae190640551f2a1f0f255a89822..54e51b7dddc1dea9562620d7b4b9d6c03703fe57 100644
--- a/.gitlab/ci/ubuntu_cpp.gitlab-ci.yml
+++ b/.gitlab/ci/ubuntu_cpp.gitlab-ci.yml
@@ -44,7 +44,7 @@ build:ubuntu_cpp:
   script:
     - cd $BUILD_DIR
     # WERROR=OFF until https://gitlab.eclipse.org/eclipse/aidge/aidge/-/issues/137 is not closed
-    - cmake  -DCMAKE_BUILD_TYPE=Release -DWERROR=OFF -DCOVERAGE=ON -DCMAKE_EXPORT_COMPILE_COMMANDS=1 -DPYBIND=0 ..
+    - cmake  -DCMAKE_BUILD_TYPE=Release -DWERROR=ON -DCOVERAGE=ON -DCMAKE_EXPORT_COMPILE_COMMANDS=1 -DPYBIND=0 ..
     - make -j4 all install
 
 
@@ -64,7 +64,7 @@ build:ubuntu_cpp:g++:
     - apt-get install -y g++-$Gplusplus_VERSION
     - export CXX=/usr/bin/g++-$Gplusplus_VERSION
     # WERROR=OFF until https://gitlab.eclipse.org/eclipse/aidge/aidge/-/issues/137 is not closed
-    - cmake -DCMAKE_BUILD_TYPE=Release -DWERROR=OFF -DCOVERAGE=OFF -DPYBIND=0 -DCMAKE_EXPORT_COMPILE_COMMANDS=1 ..
+    - cmake -DCMAKE_BUILD_TYPE=Release -DWERROR=ON -DCOVERAGE=OFF -DPYBIND=0 -DCMAKE_EXPORT_COMPILE_COMMANDS=1 ..
     - make -j4 all install
 
 build:ubuntu_cpp:clang:
@@ -82,7 +82,7 @@ build:ubuntu_cpp:clang:
     - cd $BUILD_DIR
     - apt-get install -y clang-$CLANG_VERSION
     # WERROR=OFF until https://gitlab.eclipse.org/eclipse/aidge/aidge/-/issues/137 is not closed
-    - cmake -DCMAKE_CXX_COMPILER=/usr/bin/clang++-$CLANG_VERSION -DCMAKE_BUILD_TYPE=Release -DWERROR=OFF -DCOVERAGE=OFF -DPYBIND=0 -DCMAKE_EXPORT_COMPILE_COMMANDS=1 ..
+    - cmake -DCMAKE_CXX_COMPILER=/usr/bin/clang++-$CLANG_VERSION -DCMAKE_BUILD_TYPE=Release -DWERROR=ON -DCOVERAGE=OFF -DPYBIND=0 -DCMAKE_EXPORT_COMPILE_COMMANDS=1 ..
     - make -j4 all install