diff --git a/configure.in b/configure.in
index 8b433fc1c..355e47e26 100644
--- a/configure.in
+++ b/configure.in
@@ -1055,7 +1055,7 @@ if test x"$use_quartz" = "xyes" ; then
    echo "$WARNING_MESSAGE" | sed 's/@BACKEND@/Quartz/'
 fi
 
-if test x"$use_quartz" = "xyes" ; then
+if test x"$use_atsui" = "xyes" ; then
    echo "$WARNING_MESSAGE" | sed 's/@BACKEND@/ATSUI/'
 fi