diff --git a/lib/better_html/tokenizer/base_erb.rb b/lib/better_html/tokenizer/base_erb.rb
index ec356d1..13c3eec 100644
--- a/lib/better_html/tokenizer/base_erb.rb
+++ b/lib/better_html/tokenizer/base_erb.rb
@@ -10,7 +10,7 @@ module Tokenizer
     class BaseErb < ::Erubi::Engine
       REGEXP_WITHOUT_TRIM = /<%(={1,2})?(.*?)()?%>([ \t]*\r?\n)?/m
       STMT_TRIM_MATCHER = /\A(-|#)?(.*?)([-=])?\z/m
-      EXPR_TRIM_MATCHER = /\A(.*?)(-)?\z/m
+      EXPR_TRIM_MATCHER = /\A(.*?)([-=])?\z/m
 
       attr_reader :tokens
       attr_reader :current_position
diff --git a/test/better_html/tokenizer/html_erb_test.rb b/test/better_html/tokenizer/html_erb_test.rb
index 6cfb501..8cf22d5 100644
--- a/test/better_html/tokenizer/html_erb_test.rb
+++ b/test/better_html/tokenizer/html_erb_test.rb
@@ -101,6 +101,17 @@ class HtmlErbTest < ActiveSupport::TestCase
         assert_attributes ({ type: :erb_end, loc: { begin_pos: 13, end_pos: 15, source: "%>" } }), scanner.tokens[3]
       end
 
+      test "expression right trim with =%>" do
+        scanner = HtmlErb.new(buffer("<%= literal =%>"))
+        assert_equal 5, scanner.tokens.size
+
+        assert_attributes ({ type: :erb_begin, loc: { begin_pos: 0, end_pos: 2, source: "<%" } }), scanner.tokens[0]
+        assert_attributes ({ type: :indicator, loc: { begin_pos: 2, end_pos: 3, source: "=" } }), scanner.tokens[1]
+        assert_attributes ({ type: :code, loc: { begin_pos: 3, end_pos: 12, source: " literal " } }), scanner.tokens[2]
+        assert_attributes ({ type: :trim, loc: { begin_pos: 12, source: "=" } }), scanner.tokens[3]
+        assert_attributes ({ type: :erb_end, loc: { begin_pos: 13, end_pos: 15, source: "%>" } }), scanner.tokens[4]
+      end
+
       test "line number for multi-line statements" do
         scanner = HtmlErb.new(buffer("before <% multi\nline %> after"))
         assert_equal 5, scanner.tokens.size