diff --git a/configure.in b/configure.in
index 8facc38e2..d6e3b5d16 100644
--- a/configure.in
+++ b/configure.in
@@ -886,23 +886,26 @@ AC_CACHE_CHECK([for supported warning flags], cairo_cv_warn_cflags, [
 	cairo_cv_warn_cflags=$WARN_CFLAGS
 	cairo_cv_warn_maybe=$MAYBE_WARN
 
-	AC_MSG_CHECKING([which warning flags were supported])])
+	AC_MSG_CHECKING([which warning flags were supported])
+])
 WARN_CFLAGS="$cairo_cv_warn_cflags"
 CAIRO_CFLAGS="$CAIRO_CFLAGS $WARN_CFLAGS"
 
 # We only wish to enable attribute(warn_unused_result) if we can prevent
 # gcc from generating thousands of warnings about the misapplication of the
 # attribute to void functions and variables.
-AC_MSG_CHECKING([how to enable unused result warnings])
-warn_unused_result=""
-if echo $WARN_CFLAGS | grep -e '-Wno-attributes' >/dev/null; then
-    AC_TRY_COMPILE([__attribute__((__warn_unused_result__))
-	int f (int i) { return i; }], [],
-	[warn_unused_result="__attribute__((__warn_unused_result__))"])
-fi
-AC_DEFINE_UNQUOTED([WARN_UNUSED_RESULT], [$warn_unused_result],
+AC_CACHE_CHECK([how to enable unused result warnings], cairo_cv_warn_unused_result, [
+	cairo_cv_warn_unused_result=""
+	if echo $WARN_CFLAGS | grep -e '-Wno-attributes' >/dev/null; then
+	    AC_TRY_COMPILE([__attribute__((__warn_unused_result__))
+		int f (int i) { return i; }], [],
+		[cairo_cv_warn_unused_result="__attribute__((__warn_unused_result__))"])
+	fi
+])
+AC_DEFINE_UNQUOTED([WARN_UNUSED_RESULT], [$cairo_cv_warn_unused_result],
 	  [Define to the value your compiler uses to support the warn-unused-result attribute])
-AC_MSG_RESULT([$warn_unused_result])
+
+dnl ===========================================================================
 
 AC_SUBST(CAIRO_REQUIRES)
 AC_SUBST(CAIRO_NONPKGCONFIG_CFLAGS)