diff --git a/apps/ivr/Makefile.defs b/apps/ivr/Makefile.defs
index 7e68920a..48e0f06f 100644
--- a/apps/ivr/Makefile.defs
+++ b/apps/ivr/Makefile.defs
@@ -1,6 +1,9 @@
-# Python version: 2.5, 2.4 or 2.3
+# Python version: 2.3, 2.4, 2.5, and 3.x
 #
+PYTHON_VERSION ?= $(shell python2 -c 'import sys;print sys.version[0:3]')
 PYTHON_VERSION ?= $(shell python -c 'import sys;print sys.version[0:3]')
+PYTHON_VERSION ?= $(shell python3 -c 'import sys;print("%d.%d" % (sys.version_info.major,sys.version_info.minor))')
+
 
 PY_VER = $(PYTHON_VERSION)
 PY_EXE = python$(PY_VER)