diff --git a/srcpkgs/faad2/template b/srcpkgs/faad2/template
index a37cd413a16..63c3c43986a 100644
--- a/srcpkgs/faad2/template
+++ b/srcpkgs/faad2/template
@@ -12,6 +12,9 @@ distfiles="${SOURCEFORGE_SITE}/faac/$pkgname-$version.tar.bz2"
 checksum=4167727d69f7c8d8e4e87ceec3c9eb0a4e5e1a5187e96ab66b2b7250b871cd9e
 
 pre_configure() {
+	case "$XBPS_TARGET_MACHINE" in
+		*-musl) export CFLAGS+=" -D__GNU_LIBRARY__";;
+	esac
 	./bootstrap
 }
 post_install() {