diff --git a/src/config.aap.in b/src/config.aap.in
index cda84c6..08b96b5 100644
--- a/src/config.aap.in
+++ b/src/config.aap.in
@@ -96,6 +96,9 @@
 ### Prefix for location of data files
 BINDIR		$= @bindir@
 
+### For autoconf 2.60 and later (avoid a warning)
+datarootdir	$= @datarootdir@
+
 ### Prefix for location of data files
 DATADIR		$= @datadir@