diff --git a/.circleci/config.yml b/.circleci/config.yml
index e05f4bc..3272ed7 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -86,7 +86,7 @@
     steps:
       - checkout
       - run: apt update || true
-      - run: apt install -y ragel libfreetype6-dev libfontconfig1-dev libglib2.0-dev libcairo2-dev libicu-dev libgraphite2-dev python python-pip
+      - run: apt install -y wget ragel libfreetype6-dev libfontconfig1-dev libglib2.0-dev libcairo2-dev libicu-dev libgraphite2-dev python python-pip
       - run: pip install fonttools
       - run: wget http://download.savannah.gnu.org/releases/freetype/freetype-2.9.tar.bz2 && tar xf freetype-2.9.tar.bz2 && cd freetype-2.9 && ./autogen.sh && ./configure && make -j32 && cd ..
       - run: CFLAGS="-O3" CXXFLAGS="-O3" CC=clang CXX=clang++ ./autogen.sh --with-freetype --with-fontconfig --with-glib --with-cairo --with-icu --with-graphite2
diff --git a/src/hb-ot-layout.hh b/src/hb-ot-layout.hh
index b2b5ec2..5125e9f 100644
--- a/src/hb-ot-layout.hh
+++ b/src/hb-ot-layout.hh
@@ -215,7 +215,7 @@
   unsigned int gen_cat = (unsigned int) unicode->general_category (u);
   unsigned int props = gen_cat;
 
-  if (u >= 0x80)
+  if (u >= 0x80u)
   {
     buffer->scratch_flags |= HB_BUFFER_SCRATCH_FLAG_HAS_NON_ASCII;
 
@@ -232,10 +232,10 @@
        * FVSes are GC=Mn, we have use a separate bit to remember them.
        * Fixes:
        * https://github.com/harfbuzz/harfbuzz/issues/234 */
-      else if (unlikely (hb_in_range<uint32_t> (u, 0x180Bu, 0x180Du))) props |= UPROPS_MASK_HIDDEN;
+      else if (unlikely (hb_in_range<hb_codepoint_t> (u, 0x180Bu, 0x180Du))) props |= UPROPS_MASK_HIDDEN;
       /* TAG characters need similar treatment. Fixes:
        * https://github.com/harfbuzz/harfbuzz/issues/463 */
-      else if (unlikely (hb_in_range<uint32_t> (u, 0xE0020u, 0xE007Fu))) props |= UPROPS_MASK_HIDDEN;
+      else if (unlikely (hb_in_range<hb_codepoint_t> (u, 0xE0020u, 0xE007Fu))) props |= UPROPS_MASK_HIDDEN;
       /* COMBINING GRAPHEME JOINER should not be skipped; at least some times.
        * https://github.com/harfbuzz/harfbuzz/issues/554 */
       else if (unlikely (u == 0x034Fu))