diff --git a/src/tests/kits/app/broster/BroadcastTester.h b/src/tests/kits/app/broster/BroadcastTester.h
index 39f8fd5954..71a0df9549 100644
--- a/src/tests/kits/app/broster/BroadcastTester.h
+++ b/src/tests/kits/app/broster/BroadcastTester.h
@@ -16,6 +16,8 @@
 // Local Includes --------------------------------------------------------------
 #include "../common.h"
 
+class BApplication; // forward declaration
+
 // Local Defines ---------------------------------------------------------------
 
 // Globals ---------------------------------------------------------------------
diff --git a/src/tests/kits/app/broster/FindAppTester.h b/src/tests/kits/app/broster/FindAppTester.h
index 799c9bf34e..6fe4ba4355 100644
--- a/src/tests/kits/app/broster/FindAppTester.h
+++ b/src/tests/kits/app/broster/FindAppTester.h
@@ -16,6 +16,8 @@
 // Local Includes --------------------------------------------------------------
 #include "../common.h"
 
+class BApplication; // forward declaration
+
 // Local Defines ---------------------------------------------------------------
 
 // Globals ---------------------------------------------------------------------
diff --git a/src/tests/kits/app/broster/LaunchTester.h b/src/tests/kits/app/broster/LaunchTester.h
index c30c5d9c47..9f87c64983 100644
--- a/src/tests/kits/app/broster/LaunchTester.h
+++ b/src/tests/kits/app/broster/LaunchTester.h
@@ -16,6 +16,8 @@
 // Local Includes --------------------------------------------------------------
 #include "../common.h"
 
+class BApplication; // forward declaration
+
 // Local Defines ---------------------------------------------------------------
 
 // Globals ---------------------------------------------------------------------
diff --git a/src/tests/kits/app/broster/RosterWatchingTester.h b/src/tests/kits/app/broster/RosterWatchingTester.h
index 2b14194032..f3e56d8143 100644
--- a/src/tests/kits/app/broster/RosterWatchingTester.h
+++ b/src/tests/kits/app/broster/RosterWatchingTester.h
@@ -16,6 +16,8 @@
 // Local Includes --------------------------------------------------------------
 #include "../common.h"
 
+class BApplication; // forward declaration
+
 // Local Defines ---------------------------------------------------------------
 
 // Globals ---------------------------------------------------------------------