diff --git a/SConstruct b/SConstruct
index 415b41754..9d2304c26 100644
--- a/SConstruct
+++ b/SConstruct
@@ -256,6 +256,8 @@ SConscript('src/SConscript')
 if 'boost_program_options%s' % env['BOOST_APPEND'] in env['LIBS']:
     SConscript('utils/shapeindex/SConscript')
     env['LIBS'].remove('boost_program_options%s' % env['BOOST_APPEND'])
+else :
+    color_print(1,"WARNING: Cannot find boost_program_options. 'shapeindex' won't be available")
 
 # Build the input plug-ins
 if 'postgis' in inputplugins and 'pq' in env['LIBS']: