diff --git a/configure.ac b/configure.ac
index 965d945e299de024ecbca9f227e0b82991f885a2..028c69cadaa51117012976fdeed10cff5ddbc5ec 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,3 +1,4 @@
+AC_PREREQ([2.69])
 m4_define([pigeonhole_VERSION],
     m4_esyscmd_s([build-aux/git-version-gen]))))
 
@@ -7,8 +8,6 @@ m4_define([pigeonhole_ABI_VERSION],
 m4_define([pigeonhole_TAR_VERSION],
     m4_esyscmd_s([build-aux/git-tarname-version-gen]))))
 
-AC_PREREQ([2.69])
-
 # Be sure to update ABI version also if anything changes that might require
 # recompiling plugins. Most importantly that means if any structs are changed.
 AC_INIT([Pigeonhole], [m4_defn([pigeonhole_VERSION])], [dovecot@dovecot.org], [m4_defn([pigeonhole_TAR_VERSION])])