diff --git a/src/Makefile.in b/src/Makefile.in
index e1c7660b5..7aa40b591 100644
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -5,7 +5,7 @@ datadir		= @datadir@/@PACKAGE@
 INSTALL		= @INSTALL@
 srcdir		= @top_srcdir@
 pycomp		= ${srcdir}/py-compile
-CFLAGS          = -fPIC -shared -O -I/usr/include/python1.5 -I/usr/lib/python1.5/config
+CFLAGS          = -fPIC -shared -O @PYTHON_INCLUDES@
 LANG            = sv
 
 @SET_MAKE@