diff --git a/src/configure.ac b/src/configure.ac
index 9f4f0cb1..2eb8e583 100644
--- a/src/configure.ac
+++ b/src/configure.ac
@@ -23,7 +23,9 @@
 # Process this file with autoconf to produce a configure script.
 
 AC_PREREQ(2.60)
-AC_INIT(avrdude, 7.2-20230720, avrdude-dev@nongnu.org)
+AC_INIT([avrdude],
+        [7.2-20230720],
+        [avrdude-dev@nongnu.org])
 
 AC_CANONICAL_BUILD
 AC_CANONICAL_HOST