diff --git a/meta-webserver/recipes-httpd/hiawatha/hiawatha_11.2.bb b/meta-webserver/recipes-httpd/hiawatha/hiawatha_11.2.bb
index 169e385da6..098c07e954 100644
--- a/meta-webserver/recipes-httpd/hiawatha/hiawatha_11.2.bb
+++ b/meta-webserver/recipes-httpd/hiawatha/hiawatha_11.2.bb
@@ -19,6 +19,8 @@ SYSTEMD_SERVICE:${PN} = "hiawatha.service"
 
 inherit cmake update-rc.d systemd
 
+CFLAGS += "-std=gnu17"
+
 EXTRA_OECMAKE = " -DENABLE_IPV6=OFF \
                   -DENABLE_CACHE=OFF \
                   -DENABLE_DEBUG=OFF \