diff --git a/CMakeLists.txt b/CMakeLists.txt
index ac162cc60..76e6f85ab 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -103,7 +103,7 @@ pkg_check_modules(RABBITMQ_C IMPORTED_TARGET librabbitmq>=0.8.0)
 pkg_check_modules(COMEDILIB IMPORTED_TARGET comedilib>=0.11.0)
 pkg_check_modules(LIBZMQ IMPORTED_TARGET libzmq>=2.2.0)
 pkg_check_modules(LIBULDAQ IMPORTED_TARGET libuldaq>=1.0.0)
-pkg_check_modules(UUID IMPORTED_TARGET REQUIRED uuid>=2.31)
+pkg_check_modules(UUID IMPORTED_TARGET REQUIRED uuid>=2.29)
 pkg_check_modules(NANOMSG IMPORTED_TARGET nanomsg)
 if(NOT NANOMSG_FOUND)
     pkg_check_modules(NANOMSG IMPORTED_TARGET libnanomsg>=1.0.0)
diff --git a/src/villas-relay.hpp b/src/villas-relay.hpp
index e28041ce5..cb430e3d4 100644
--- a/src/villas-relay.hpp
+++ b/src/villas-relay.hpp
@@ -27,6 +27,10 @@
 #include <spdlog/spdlog.h>
 #include <uuid/uuid.h>
 
+#ifdef UUID_STR_LEN
+  #define UUID_STR_LEN   37
+#endif
+
 #include <libwebsockets.h>
 
 /* Forward declarations */