diff --git a/tests/StreamWriterTest.cpp b/tests/StreamWriterTest.cpp
index 76189913..bd7aa656 100644
--- a/tests/StreamWriterTest.cpp
+++ b/tests/StreamWriterTest.cpp
@@ -32,6 +32,7 @@ TEST_CASE("StreamWriterTest_ZMQ","[JFJochWriter]") {
     std::vector<std::unique_ptr<AcquisitionDevice>>  aq_devices;
     for (int i = 0; i < x.GetDataStreamsNum(); i++) {
         auto test = new HLSSimulatedDevice(i, 64);
+        test->SetFPGANonBlockingMode(false);
         aq_devices.emplace_back(test);
     }
 
@@ -99,6 +100,7 @@ TEST_CASE("JFJochWriterServiceTest_ZMQ","[JFJochWriter]") {
     std::vector<std::unique_ptr<AcquisitionDevice>>  aq_devices;
     for (int i = 0; i < x.GetDataStreamsNum(); i++) {
         auto test = new HLSSimulatedDevice(i, 64);
+        test->SetFPGANonBlockingMode(false);
         aq_devices.emplace_back(test);
     }