diff -up openchange-openchange-2.3-VULCAN/configure.ac.switch-to-python3 openchange-openchange-2.3-VULCAN/configure.ac
--- openchange-openchange-2.3-VULCAN/configure.ac.switch-to-python3	2018-04-17 13:51:55.977608741 +0200
+++ openchange-openchange-2.3-VULCAN/configure.ac	2018-04-17 13:54:21.958606722 +0200
@@ -377,17 +377,17 @@ dnl ------------------------------------
 dnl Check for Python
 dnl ---------------------------------------------------------------------------
 
-AC_PATH_PROG(PYTHON, python)
+AC_PATH_PROG(PYTHON, python3)
 if test x"$PYTHON" = x""; then
-	AC_MSG_WARN([No version of python was found!])
-	AC_MSG_ERROR([Please install python])
+	AC_MSG_WARN([No version of python3 was found!])
+	AC_MSG_ERROR([Please install python3])
 fi
 AC_SUBST(PYTHON)
 
-AC_PATH_PROG(PYTHON_CONFIG, python-config)
+AC_PATH_PROG(PYTHON_CONFIG, python3-config)
 if test x"$PYTHON_CONFIG" = x""; then
-	AC_MSG_WARN([No version of python-config was found!])
-	AC_MSG_ERROR([Please install python-dev 2.7])
+	AC_MSG_WARN([No version of python3-config was found!])
+	AC_MSG_ERROR([Please install python3-dev 3.x])
 fi
 AC_SUBST(PYTHON_CONFIG)