diff --git a/cibuild.sh b/cibuild.sh
index 5efdcc0..10f06ac 100755
--- a/cibuild.sh
+++ b/cibuild.sh
@@ -289,7 +289,7 @@ function run_builds {
   options+="-j $ncpus"
 
   for build in $builds; do
-    $nuttx/tools/testbuild.sh $options -e -Wno-cpp $build
+    $nuttx/tools/testbuild.sh $options -e "-Wno-cpp -Werror" $build
   done
 }