diff --git a/libaacplus-2.0.2-r1.ebuild b/libaacplus-2.0.2-r1.ebuild
index 05e9cc6..de8fd25 100644
--- a/libaacplus-2.0.2-r1.ebuild
+++ b/libaacplus-2.0.2-r1.ebuild
@@ -6,7 +6,7 @@ EAPI=5
 
 AUTOTOOLS_AUTORECONF=true
 
-inherit autotools-utils
+inherit autotools-utils flag-o-matic
 
 # This file cannot be mirrored.
 # See the notes at http://tipok.org.ua/node/17
@@ -51,6 +51,9 @@ src_prepare() {
 }
 
 src_configure() {
+	# clang support, bug #458932
+	append-flags $(test-flags -std=gnu89)
+
 	local myeconfargs=( $(use_with fftw fftw3) )
 	autotools-utils_src_configure
 }