diff --git a/rules.mk b/rules.mk
index fded814..4f9ac18 100644
--- a/rules.mk
+++ b/rules.mk
@@ -32,8 +32,8 @@
 	trusty/user/base/lib/keymint-rust/boringssl \
 	trusty/user/base/lib/keymint-rust/common \
 	trusty/user/base/lib/keymint-rust/ta \
-	trusty/user/base/lib/log-rust \
-	trusty/user/base/lib/protobuf-rust \
+	$(call FIND_CRATE,log) \
+	$(call FIND_CRATE,protobuf) \
 	trusty/user/base/lib/storage/rust \
 	trusty/user/base/lib/tipc/rust \
 	trusty/user/base/lib/system_state/rust \