diff --git a/utils/diffconfig b/utils/diffconfig
index f1af23cfce..f490c5571f 100755
--- a/utils/diffconfig
+++ b/utils/diffconfig
@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python3
 #
 # diffconfig - a tool to compare .config files.
 #