diff --git a/unittests/cfdp/handler/testSourceHandler.cpp b/unittests/cfdp/handler/testSourceHandler.cpp
index 1b319d5a..a2e5e55f 100644
--- a/unittests/cfdp/handler/testSourceHandler.cpp
+++ b/unittests/cfdp/handler/testSourceHandler.cpp
@@ -137,6 +137,7 @@ TEST_CASE("CFDP Source Handler", "[cfdp]") {
     genericMetadataCheck(fsmResult, expectedFileSize);
     fsmResult = sourceHandler.stateMachine();
     // TODO: Verify one file data PDU was sent.
+    CHECK(fsmResult.packetsSent == 1);
 
     // TODO: Verify one EOF PDU was sent.
   }