diff --git a/CMakeLists.txt b/CMakeLists.txt
index e3ea339eaf..35b4abf78d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -944,6 +944,7 @@ if(CAPSTONE_BUILD_CSTEST)
         URL_HASH SHA256=8dbd216e1fce90f9f7cca341e5178710adc76ee360a7793ef867edb28f3e4130
         DOWNLOAD_EXTRACT_TIMESTAMP true
         CONFIGURE_COMMAND ""
+        BUILD_BYPRODUCTS ${LIBCYAML_LIB_DIR}/libcyaml.a
         BUILD_COMMAND make
         BUILD_IN_SOURCE true
         INSTALL_COMMAND ""