diff --git a/sys/build.rs b/sys/build.rs
index 3c90cce..e04ce9c 100644
--- a/sys/build.rs
+++ b/sys/build.rs
@@ -7,6 +7,7 @@ fn main() {
             .define("OpenGL_GL_PREFERENCE", "GLVND")
             .define("DYNAMIC_LOADER", "OFF")
             .define("CMAKE_INSTALL_LIBDIR", "lib")
+            .define("BUILD_WITH_SYSTEM_JSONCPP", "OFF")
             .profile("Release")
             .build();