diff --git a/.travis.yml b/.travis.yml
index acf913095..646435502 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -43,6 +43,7 @@ matrix:
       env:
         - OPTS="--quiet --jerry-tests --jerry-test-suite --unittests"
       os: osx
+      osx_image: xcode11.4
       addons:
         homebrew:
           packages: [cmake, cppcheck, vera++]
diff --git a/jerry-core/parser/js/js-scanner-util.c b/jerry-core/parser/js/js-scanner-util.c
index 314b6876d..1304c9fa9 100644
--- a/jerry-core/parser/js/js-scanner-util.c
+++ b/jerry-core/parser/js/js-scanner-util.c
@@ -2043,7 +2043,7 @@ scanner_create_variables (parser_context_t *context_p, /**< context */
 #endif /* ENABLED (JERRY_ES2015) */
 
       parser_emit_cbc_literal_value (context_p,
-                                     opcode,
+                                     (uint16_t) opcode,
                                      function_map_p[1].map_to,
                                      scanner_decode_map_to (function_map_p));
       continue;