diff --git a/receiver/jfjoch_receiver.cpp b/receiver/jfjoch_receiver.cpp
index 63c70fabc..f8e7a0c9e 100644
--- a/receiver/jfjoch_receiver.cpp
+++ b/receiver/jfjoch_receiver.cpp
@@ -152,13 +152,13 @@ int main(int argc, char **argv) {
     }
 
     if (input.contains("compression_threads")) {
-        service.NumThreads(input["compression_threads"]);
-        logger.Info("Compression threads {}", input["compression_threads"]);
+        service.NumThreads(input["compression_threads"].get<int64_t>());
+        logger.Info("Compression threads {}", input["compression_threads"].get<int64_t>());
     }
 
     if (input.contains("send_buffer_count")) {
-        service.SendBufferCount(input["send_buffer_count"]);
-        logger.Info("Send buffer count {}", input["send_buffer_count"]);
+        service.SendBufferCount(input["send_buffer_count"].get<int64_t>());
+        logger.Info("Send buffer count {}", input["send_buffer_count"].get<int64_t>());
     }
 
     auto server = gRPCServer(grpc_addr, service);