diff --git a/trusty/libtrusty/Android.bp b/trusty/libtrusty/Android.bp
index 8dba78d91..708fdbdb5 100644
--- a/trusty/libtrusty/Android.bp
+++ b/trusty/libtrusty/Android.bp
@@ -12,10 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-cc_library {
-    name: "libtrusty",
-    vendor: true,
-
+cc_defaults {
+    name: "libtrusty_defaults",
     srcs: ["trusty.c"],
     export_include_dirs: ["include"],
     cflags: [
@@ -25,3 +23,16 @@ cc_library {
 
     shared_libs: ["liblog"],
 }
+
+cc_library {
+    name: "libtrusty",
+    vendor: true,
+    defaults: ["libtrusty_defaults"],
+}
+
+// TODO(b/170753563): cc_fuzz can't deal with vendor components. Build libtrusty
+// for system.
+cc_test_library {
+    name: "libtrusty_test",
+    defaults: ["libtrusty_defaults"],
+}