diff --git a/package/network/ipv6/464xlat/Makefile b/package/network/ipv6/464xlat/Makefile
index ab09b1e6dd..c7469c1e96 100644
--- a/package/network/ipv6/464xlat/Makefile
+++ b/package/network/ipv6/464xlat/Makefile
@@ -25,6 +25,7 @@ define Build/Compile
 	$(MAKE) -C $(PKG_BUILD_DIR) \
 		CC="$(TARGET_CC)" \
 		CFLAGS="$(TARGET_CFLAGS) -Wall" \
+		CPPFLAGS="$(TARGET_CPPFLAGS)" \
 		LDFLAGS="$(TARGET_LDFLAGS)"
 endef
 
diff --git a/package/network/ipv6/464xlat/src/Makefile b/package/network/ipv6/464xlat/src/Makefile
index 3950a6b1dd..beffe38617 100644
--- a/package/network/ipv6/464xlat/src/Makefile
+++ b/package/network/ipv6/464xlat/src/Makefile
@@ -1,7 +1,7 @@
 all: 464xlatcfg
 
 464xlatcfg: 464xlatcfg.c
-	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $<
+	$(CC) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) -o $@ $<
 
 clean:
 	rm -f 464xlatcfg