diff --git a/demos/poem/Makefile.in b/demos/poem/Makefile.in
index c76c9aa0a4..93688ed6d1 100644
--- a/demos/poem/Makefile.in
+++ b/demos/poem/Makefile.in
@@ -183,7 +183,7 @@ wxpoem$(EXEEXT): $(WXPOEM_OBJECTS) $(__wxpoem___win32rc)
 
 data: 
 	@mkdir -p .
-	@for f in wxpoem.txt wxpoem.dat; do \
+	@for f in wxpoem.txt wxpoem.dat wxpoem.idx; do \
 	if test ! -f ./$$f -a ! -d ./$$f ; \
 	then x=yep ; \
 	else x=`find $(srcdir)/$$f -newer ./$$f -print` ; \
diff --git a/demos/poem/makefile.bcc b/demos/poem/makefile.bcc
index e70c9cb5f4..78817740f5 100644
--- a/demos/poem/makefile.bcc
+++ b/demos/poem/makefile.bcc
@@ -237,7 +237,7 @@ $(OBJS)\wxpoem.exe: $(WXPOEM_OBJECTS)  $(OBJS)\wxpoem_wxpoem.res
 
 data: 
 	if not exist $(OBJS) mkdir $(OBJS)
-	for %f in (wxpoem.txt wxpoem.dat) do if not exist $(OBJS)\%f copy .\%f $(OBJS)
+	for %f in (wxpoem.txt wxpoem.dat wxpoem.idx) do if not exist $(OBJS)\%f copy .\%f $(OBJS)
 
 $(OBJS)\wxpoem_wxpoem.obj: .\wxpoem.cpp
 	$(CXX) -q -c -P -o$@ $(WXPOEM_CXXFLAGS) .\wxpoem.cpp
diff --git a/demos/poem/makefile.gcc b/demos/poem/makefile.gcc
index 54ba9e8e93..4e75b04963 100644
--- a/demos/poem/makefile.gcc
+++ b/demos/poem/makefile.gcc
@@ -226,7 +226,7 @@ $(OBJS)\wxpoem.exe: $(WXPOEM_OBJECTS) $(OBJS)\wxpoem_wxpoem_rc.o
 
 data: 
 	if not exist $(OBJS) mkdir $(OBJS)
-	for %%f in (wxpoem.txt wxpoem.dat) do if not exist $(OBJS)\%%f copy .\%%f $(OBJS)
+	for %%f in (wxpoem.txt wxpoem.dat wxpoem.idx) do if not exist $(OBJS)\%%f copy .\%%f $(OBJS)
 
 $(OBJS)\wxpoem_wxpoem.o: ./wxpoem.cpp
 	$(CXX) -c -o $@ $(WXPOEM_CXXFLAGS) $(CPPDEPS) $<
diff --git a/demos/poem/makefile.vc b/demos/poem/makefile.vc
index 9270b86a7c..4944c33285 100644
--- a/demos/poem/makefile.vc
+++ b/demos/poem/makefile.vc
@@ -360,7 +360,7 @@ $(OBJS)\wxpoem.exe: $(WXPOEM_OBJECTS) $(OBJS)\wxpoem_wxpoem.res
 
 data: 
 	if not exist $(OBJS) mkdir $(OBJS)
-	for %f in (wxpoem.txt wxpoem.dat) do if not exist $(OBJS)\%f copy .\%f $(OBJS)
+	for %f in (wxpoem.txt wxpoem.dat wxpoem.idx) do if not exist $(OBJS)\%f copy .\%f $(OBJS)
 
 $(OBJS)\wxpoem_wxpoem.obj: .\wxpoem.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(WXPOEM_CXXFLAGS) .\wxpoem.cpp
diff --git a/demos/poem/poem.bkl b/demos/poem/poem.bkl
index d940be9258..14ba76ed93 100644
--- a/demos/poem/poem.bkl
+++ b/demos/poem/poem.bkl
@@ -13,7 +13,7 @@
 
     <wx-data id="data">
         <files>
-            wxpoem.txt wxpoem.dat
+            wxpoem.txt wxpoem.dat wxpoem.idx
         </files>
     </wx-data>