diff --git a/core-writer/test/test_ZmqReceiver.cpp b/core-writer/test/test_ZmqReceiver.cpp
index 5b1f577..e72f455 100644
--- a/core-writer/test/test_ZmqReceiver.cpp
+++ b/core-writer/test/test_ZmqReceiver.cpp
@@ -85,7 +85,7 @@ TEST(ZmqReceiver, read_json_header)
       {"module_number", HeaderDataType("uint64", n_modules)}
   };
 
-  ZmqReceiver receiver("something", 1, 1, header_values);
+  ZmqReceiver receiver(header_values);
 
   auto header_string = "{\"missing_packets_2\":[2],"
                         "\"missing_packets_1\":[1],"
diff --git a/core-writer/test/test_ZmqRecvModule.cpp b/core-writer/test/test_ZmqRecvModule.cpp
index cfc713e..45c0388 100644
--- a/core-writer/test/test_ZmqRecvModule.cpp
+++ b/core-writer/test/test_ZmqRecvModule.cpp
@@ -38,7 +38,7 @@ TEST(ZmqRecvModule, basic_interaction)
 
 TEST(ZmqRecvModule, simple_recv)
 {
-    size_t n_msg = 9;
+    size_t n_msg = 1;
 
     thread sender(generate_stream, n_msg);
     RingBuffer ring_buffer(n_msg);