diff --git a/parse.y b/parse.y
index 5380d93b92..b2bbafe123 100644
--- a/parse.y
+++ b/parse.y
@@ -9585,7 +9585,7 @@ assign_in_cond(struct parser_params *p, NODE *node)
     if (!node->nd_value) return 1;
     if (is_static_content(node->nd_value)) {
 	/* reports always */
-	parser_warn(p, node->nd_value, "found = in conditional, should be ==");
+	parser_warn(p, node->nd_value, "found `= literal' in conditional, should be ==");
     }
     return 1;
 }
diff --git a/test/ruby/test_rubyoptions.rb b/test/ruby/test_rubyoptions.rb
index 396dda1692..7c733a4d8e 100644
--- a/test/ruby/test_rubyoptions.rb
+++ b/test/ruby/test_rubyoptions.rb
@@ -408,7 +408,7 @@ class TestRubyOptions < Test::Unit::TestCase
       t.puts "  end"
       t.puts "end"
       t.flush
-      warning = ' warning: found = in conditional, should be =='
+      warning = ' warning: found `= literal\' in conditional, should be =='
       err = ["#{t.path}:1:#{warning}",
              "#{t.path}:4:#{warning}",
             ]