diff --git a/cuhd/lib/cuhd_imp.cpp b/cuhd/lib/cuhd_imp.cpp
index ca98b9e2e..2a42cfcff 100644
--- a/cuhd/lib/cuhd_imp.cpp
+++ b/cuhd/lib/cuhd_imp.cpp
@@ -109,7 +109,7 @@ int cuhd_open(char *args, void **h)
 {
   cuhd_handler *handler = new cuhd_handler();
   std::string _args = std::string(args);
-  handler->usrp = uhd::usrp::multi_usrp::make(_args + ", master_clock_rate=30720000");
+  handler->usrp = uhd::usrp::multi_usrp::make(_args + ", master_clock_rate=30720000" + ", num_recv_frames=512");
 
   handler->usrp->set_clock_source("internal");