diff --git a/FL/Makefile.in b/FL/Makefile.in
index 00503e4..6fa93bb 100644
--- a/FL/Makefile.in
+++ b/FL/Makefile.in
@@ -35,27 +35,27 @@ depend:
 
 install:
 	echo "Installing include files in $(DESTDIR)$(includedir)..."
-	$(RMDIR) $(DESTDIR)$(includedir)/FL
-	$(INSTALL_DIR) $(DESTDIR)$(includedir)/FL
+	$(RMDIR) $(DESTDIR)$(includedir)/ntk/FL
+	$(INSTALL_DIR) $(DESTDIR)$(includedir)/ntk/FL
 	for file in *.[hH]; do \
-		$(INSTALL_DATA) $$file $(DESTDIR)$(includedir)/FL; \
+		$(INSTALL_DATA) $$file $(DESTDIR)$(includedir)/ntk/FL; \
 	done
-@HLINKS@	cd $(DESTDIR)$(includedir)/FL;\
+@HLINKS@	cd $(DESTDIR)$(includedir)/ntk/FL;\
 @HLINKS@	for file in *.H; do\
 @HLINKS@		$(RM) "`basename $$file H`h";\
 @HLINKS@		$(LN) $$file "`basename $$file H`h";\
 @HLINKS@	done
-@HLINKS@	$(RM) $(DESTDIR)$(includedir)/FL/fl_file_chooser.H
-@HLINKS@	$(LN) Fl_File_Chooser.H $(DESTDIR)$(includedir)/FL/fl_file_chooser.H
-@HLINKS@	$(RM) $(DESTDIR)$(includedir)/FL/fl_file_chooser.h
-@HLINKS@	$(LN) Fl_File_Chooser.H $(DESTDIR)$(includedir)/FL/fl_file_chooser.h
-@HLINKS@	$(RM) $(DESTDIR)$(includedir)/Fl
-@HLINKS@	$(LN) FL $(DESTDIR)$(includedir)/Fl
+@HLINKS@	$(RM) $(DESTDIR)$(includedir)/ntk/FL/fl_file_chooser.H
+@HLINKS@	$(LN) Fl_File_Chooser.H $(DESTDIR)$(includedir)/ntk/FL/fl_file_chooser.H
+@HLINKS@	$(RM) $(DESTDIR)$(includedir)/ntk/FL/fl_file_chooser.h
+@HLINKS@	$(LN) Fl_File_Chooser.H $(DESTDIR)$(includedir)/ntk/FL/fl_file_chooser.h
+@HLINKS@	$(RM) $(DESTDIR)$(includedir)/ntk/Fl
+@HLINKS@	$(LN) FL $(DESTDIR)$(includedir)/ntk/Fl
 
 uninstall:
 	echo "Uninstalling include files..."
-	$(RMDIR) $(DESTDIR)$(includedir)/FL
-@HLINKS@	$(RM) $(DESTDIR)$(includedir)/Fl
+	$(RMDIR) $(DESTDIR)$(includedir)/ntk/FL
+@HLINKS@	$(RM) $(DESTDIR)$(includedir)/ntk/Fl
 
 
 #
diff --git a/ntk-config.in b/ntk-config.in
index 23df157..94adc15 100755
--- a/ntk-config.in
+++ b/ntk-config.in
@@ -41,7 +41,7 @@ prefix=@prefix@
 exec_prefix=@exec_prefix@
 exec_prefix_set=no
 bindir=@bindir@
-includedir=@includedir@
+includedir=@includedir@/ntk
 libdir=@libdir@
 srcdir=@srcdir@
 
@@ -80,9 +80,9 @@ if test -f "$selfdir/FL/Fl_Window.H"; then
 	fi
 fi
 
-if test -d $includedir/FL/images; then
-	CFLAGS="-I$includedir/FL/images $CFLAGS"
-	CXXFLAGS="-I$includedir/FL/images $CXXFLAGS"
+if test -d $includedir/ntk/FL/images; then
+	CFLAGS="-I$includedir/ntk/FL/images $CFLAGS"
+	CXXFLAGS="-I$includedir/ntk/FL/images $CXXFLAGS"
 fi
 
 # libraries to link with: