diff --git a/utils/rrdtool1/Makefile b/utils/rrdtool1/Makefile
index 5b9885633b..afe3452f56 100644
--- a/utils/rrdtool1/Makefile
+++ b/utils/rrdtool1/Makefile
@@ -9,7 +9,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=rrdtool1
 PKG_VERSION:=1.0.50
-PKG_RELEASE:=6
+PKG_RELEASE:=7
 
 PKG_BUILD_DIR:=$(BUILD_DIR)/rrdtool-$(PKG_VERSION)
 PKG_SOURCE:=rrdtool-$(PKG_VERSION).tar.gz
@@ -86,7 +86,7 @@ $(call Package/rrdtool1/description/Default)
  This package contains command line tools used to manage RRDs.
 endef
 
-TARGET_CFLAGS += $(FPIC)
+TARGET_CFLAGS += $(FPIC) -std=gnu17
 
 CONFIGURE_ARGS += \
 	$(DISABLE_NLS) \