diff --git a/src/tests/kits/app/messaging/Jamfile b/src/tests/kits/app/messaging/Jamfile
index 587f183ae6..80c16ae306 100644
--- a/src/tests/kits/app/messaging/Jamfile
+++ b/src/tests/kits/app/messaging/Jamfile
@@ -2,6 +2,7 @@ SubDir HAIKU_TOP src tests kits app messaging ;
 
 UsePrivateHeaders app ;
 UsePrivateHeaders interface ;
+SubDirHdrs [ FDirName $(HAIKU_TOP) src kits app ] ;
 
 SimpleTest PortLinkTest :
 	PortLinkTest.cpp
diff --git a/src/tests/kits/app/messaging/PortLinkTest.cpp b/src/tests/kits/app/messaging/PortLinkTest.cpp
index 1c5b58e999..1a97923f18 100644
--- a/src/tests/kits/app/messaging/PortLinkTest.cpp
+++ b/src/tests/kits/app/messaging/PortLinkTest.cpp
@@ -41,8 +41,8 @@ main()
 
 	sender.StartMessage('tst3', 100000);
 	sender.Attach(&port, 100000);
-	if (sender.EndMessage() == B_OK) {
-		fprintf(stderr, "attaching huge message succeeded!\n");
+	if (sender.EndMessage() != B_OK) {
+		fprintf(stderr, "attaching huge message (100000 bytes) failed!\n");
 		return -1;
 	}