--- unbound-1.5.6/configure.ac.orig	2015-10-06 12:29:20.000000000 +0200
+++ unbound-1.5.6/configure.ac	2015-11-02 16:42:08.808434766 +0100
@@ -479,7 +479,7 @@
 		AC_MSG_ERROR([Python version >= 2.4.0 is required])
 	fi
 
-      [PY_MAJOR_VERSION="`$PYTHON -c \"import sys; print(sys.version_info[0])\"`"]
+      [PY_MAJOR_VERSION="$($PYTHON -c "import sys; print(sys.version_info[0])")"]
       AC_SUBST(PY_MAJOR_VERSION)
       # Have Python
       AC_DEFINE(HAVE_PYTHON,1,[Define if you have Python libraries and header files.])