diff --git a/configure.ac b/configure.ac
index 0885b5c3..b77b3ed9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -6,7 +6,9 @@ m4_define([_moo_module_major_version_],[2])
 m4_define([_moo_module_minor_version_],[0])
 m4_define([_moo_version_],[_moo_major_version_._moo_minor_version_._moo_micro_version_])
 
-m4_if([_moo_version_suffix_],[],[m4_define([_moo_display_version_],[_moo_version_])],[m4_define([_moo_display_version_],[_moo_version_-_moo_version_suffix_])])
+m4_if([_moo_version_suffix_],[],
+  [m4_define([_moo_display_version_],[_moo_version_])],
+  [m4_define([_moo_display_version_],[_moo_version_-_moo_version_suffix_])])
 
 m4_define([_moo_website_],[http://mooedit.sourceforge.net/])
 m4_define([_moo_web_contact_],[http://mooedit.sourceforge.net/contact.html])