diff --git a/app-editors/ersatz-emacs/ersatz-emacs-20060515-r1.ebuild b/app-editors/ersatz-emacs/ersatz-emacs-20060515-r1.ebuild
index 185a4109cb00b..4f113c8ee114d 100644
--- a/app-editors/ersatz-emacs/ersatz-emacs-20060515-r1.ebuild
+++ b/app-editors/ersatz-emacs/ersatz-emacs-20060515-r1.ebuild
@@ -29,7 +29,7 @@ src_prepare() {
 
 src_compile() {
 	emake CC="$(tc-getCC)" \
-		CFLAGS="${CFLAGS} -Wall" \
+		CFLAGS="${CFLAGS} -std=gnu17 -Wall" \
 		LFLAGS="${LDFLAGS} $("$(tc-getPKG_CONFIG)" --libs ncurses)"
 }