diff --git a/packages/x11/lib/libXt/build b/packages/x11/lib/libXt/build
index a6ff7fb2dc..a8f77b541d 100755
--- a/packages/x11/lib/libXt/build
+++ b/packages/x11/lib/libXt/build
@@ -17,7 +17,7 @@ cd $PKG_BUILD
             --with-gnu-ld \
             --enable-malloc0returnsnull \
 
-make -C util CC=$HOST_CC CFLAGS=$HOST_CFLAGS LDFLAGS=$HOST_LDFLAGS makestrs
+make -C util CC=$HOST_CC CFLAGS="$HOST_CFLAGS -I$SYSROOT_PREFIX/usr/include" LDFLAGS="$HOST_LDFLAGS" makestrs
 make
 
 $MAKEINSTALL