diff --git a/SConstruct b/SConstruct
index 501d97d..bfa4624 100644
--- a/SConstruct
+++ b/SConstruct
@@ -47,8 +47,8 @@ opts.Add(PathOption('PNG_INCLUDES', 'Search path for libpng include 
 opts.Add(PathOption('PNG_LIBS','Search path for libpng include files','/usr/' + LIBDI
 opts.Add(PathOption('JPEG_INCLUDES', 'Search path for libjpeg include files', '/usr/i
 opts.Add(PathOption('JPEG_LIBS', 'Search path for libjpeg library files', '/usr/' + L
-opts.Add(PathOption('TIFF_INCLUDES', 'Search path for libtiff include files', '/usr/i
-opts.Add(PathOption('TIFF_LIBS', 'Search path for libtiff library files', '/usr/' + L
+opts.Add(PathOption('TIFF_INCLUDES', 'Search path for libtiff include files', '/opt/l
+opts.Add(PathOption('TIFF_LIBS', 'Search path for libtiff library files', '/opt/local
 opts.Add(PathOption('PGSQL_INCLUDES', 'Search path for PostgreSQL include files', '/u
 opts.Add(PathOption('PGSQL_LIBS', 'Search path for PostgreSQL library files', '/usr/'
 opts.Add(PathOption('PROJ_INCLUDES', 'Search path for PROJ.4 include files', '/usr/lo