diff --git a/Tests/NMEASentenceCollector/callSignTests.cpp b/Tests/NMEASentenceCollector/callSignTests.cpp
index ca2e9a5..38dc805 100644
--- a/Tests/NMEASentenceCollector/callSignTests.cpp
+++ b/Tests/NMEASentenceCollector/callSignTests.cpp
@@ -68,6 +68,7 @@ namespace NMEASentenceCollectorTests
         std::string data;
 
         m_collector->setMyCall1("N0CALL");
+        m_collector->setMyCall2("5100");
         m_collector->getData(data);
 
         EXPECT_TRUE(data.find("N0CALL-5") != std::string::npos) << "Callsign in APRS frame shall be N0CALL-5";
@@ -78,6 +79,7 @@ namespace NMEASentenceCollectorTests
         std::string data;
 
         m_collector->setMyCall1("N0CALL H");
+        m_collector->setMyCall2("5100");
         m_collector->getData(data);
 
         EXPECT_TRUE(data.find("N0CALL") != std::string::npos) << "Callsign in APRS frame shall be N0CALL-H";