diff --git a/runtime/libcn/libexec/cn-runtime-single-file.sh b/runtime/libcn/libexec/cn-runtime-single-file.sh
index 72bc2226a..e51fee8be 100755
--- a/runtime/libcn/libexec/cn-runtime-single-file.sh
+++ b/runtime/libcn/libexec/cn-runtime-single-file.sh
@@ -24,8 +24,9 @@ while getopts "hnqu" flag; do
    QUIET=1
    ;;
    u)
+   export ASAN_OPTIONS="allocator_may_return_null=1:detect_leaks=0"
    export UBSAN_OPTIONS=halt_on_error=1
-   export CFLAGS="-fsanitize=undefined"
+   export CFLAGS="-fsanitize=address,undefined"
    ;;
    \?)
    echo_and_err "${USAGE}"