diff --git a/package/daemon/daemon.mk b/package/daemon/daemon.mk
index d7709e03ef..03f2aad649 100644
--- a/package/daemon/daemon.mk
+++ b/package/daemon/daemon.mk
@@ -18,7 +18,8 @@ define DAEMON_CONFIGURE_CMDS
 endef
 
 define DAEMON_BUILD_CMDS
-	$(TARGET_MAKE_ENV) $(MAKE) $(TARGET_CONFIGURE_OPTS) -C $(@D)
+	$(TARGET_MAKE_ENV) $(MAKE) $(TARGET_CONFIGURE_OPTS) \
+		CFLAGS="$(TARGET_CFLAGS) -std=c99" -C $(@D)
 endef
 
 define DAEMON_INSTALL_TARGET_CMDS