diff --git a/configure.ac b/configure.ac
index 9a502ec..42aaadf 100644
--- a/configure.ac
+++ b/configure.ac
@@ -420,7 +420,7 @@ if test x"$enable_python_library" = x"yes"; then
 
     PYTHON2_PREFIX=`$PYTHON2 -c "import sys; sys.stdout.write(sys.prefix)"`
     PYTHON2_VERSION=`$PYTHON2 -c "import sys; sys.stdout.write(sys.version[[:3]])"`
-    PYTHON2_LIBDIR="$PYTHON2_PREFIX/lib/python$PYTHON2_VERSION"
+    PYTHON2_LIBDIR="$libdir/python$PYTHON2_VERSION"
     python2dir="$PYTHON2_LIBDIR/site-packages"
     pkgpython2dir="$python2dir/ibus"
     AC_SUBST(pkgpython2dir)