diff --git a/configure.ac b/configure.ac
index e1a28f2d8..e572d98c9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -288,7 +288,7 @@ AM_CONDITIONAL(HAVE_ICU_BUILTIN, $have_icu && test "x$with_icu" = "xbuiltin")
 dnl ===========================================================================
 
 have_ucdn=true
-if $have_glib || $have_icu && test "x$with_icu" = "xbuiltin"; then
+if $have_glib || test \( $have_icu -a "x$with_icu" = "xbuiltin" \); then
 	have_ucdn=false
 fi
 if $have_ucdn; then