diff --git a/package/Makefile.in b/package/Makefile.in
index b0ef70676a..afd5d3a59b 100644
--- a/package/Makefile.in
+++ b/package/Makefile.in
@@ -222,7 +222,7 @@ UNZIP := $(shell which unzip || type -p unzip) -q
 
 APPLY_PATCHES = support/scripts/apply-patches.sh $(if $(QUIET),-s)
 
-HOST_CPPFLAGS  = -isystem $(HOST_DIR)/usr/include
+HOST_CPPFLAGS  = -I$(HOST_DIR)/usr/include
 HOST_CFLAGS   ?= -O2
 HOST_CFLAGS   += $(HOST_CPPFLAGS)
 HOST_CXXFLAGS += $(HOST_CFLAGS)