diff --git a/Source/GNUmakefile b/Source/GNUmakefile
index e53665f7e..6990da3b2 100644
--- a/Source/GNUmakefile
+++ b/Source/GNUmakefile
@@ -216,10 +216,10 @@ AppKit/NSSplitView.h \
 AppKit/NSStringDrawing.h \
 AppKit/NSTabView.h \
 AppKit/NSTabViewItem.h \
-AppKit/NSTableColumn.m \
-AppKit/NSTableHeaderView.m \
-AppKit/NSTableHeaderCell.m  \
-AppKit/NSTableView.m \
+AppKit/NSTableColumn.h \
+AppKit/NSTableHeaderView.h \
+AppKit/NSTableHeaderCell.h  \
+AppKit/NSTableView.h \
 AppKit/NSText.h \
 AppKit/NSTextAttachment.h \
 AppKit/NSTextContainer.h \
diff --git a/Source/externs.m b/Source/externs.m
index 841617cea..57a1b37ec 100644
--- a/Source/externs.m
+++ b/Source/externs.m
@@ -268,6 +268,12 @@ NSString* const NSMenuDidChangeItemNotification = @"MenuDidChangeItem";
 // NSPopUpButton notification
 NSString *NSPopUpButtonWillPopUpNotification = @"PopUpButtonWillPopUp";
 
+// NSTable notifications
+NSString *NSTableViewSelectionDidChangeNotification = @"TableViewSelectionDidChange";
+NSString *NSTableViewColumnDidMoveNotification = @"TableViewColumnDidMove";
+NSString *NSTableViewColumnDidResizeNotification = @"TableViewColumnDidResize";
+NSString *NSTableViewSelectionIsChangingNotification = @"TableViewSelectionIsChanging";
+
 // NSWindow notifications
 NSString *NSWindowDidBecomeKeyNotification = @"WindowDidBecomeKey";
 NSString *NSWindowDidBecomeMainNotification = @"WindowDidBecomeMain";