diff --git a/Source/NSHelpManager.m b/Source/NSHelpManager.m
index e54a63b23..c5bfc7aa8 100644
--- a/Source/NSHelpManager.m
+++ b/Source/NSHelpManager.m
@@ -38,7 +38,10 @@
 #include "AppKit/NSWorkspace.h"
 #include "AppKit/NSHelpManager.h"
 #include "AppKit/NSHelpPanel.h"
+#include "AppKit/NSHelpPanel.h"
 #include "AppKit/NSGraphics.h"
+#include "AppKit/NSScrollView.h"
+#include "AppKit/NSTextView.h"
 
 #include "GNUstepGUI/GSHelpManagerPanel.h"