diff --git a/test/yarp/ruby_api_test.rb b/test/yarp/ruby_api_test.rb
index 73b8825df0..b74da653f4 100644
--- a/test/yarp/ruby_api_test.rb
+++ b/test/yarp/ruby_api_test.rb
@@ -39,7 +39,7 @@ class YARPRubyAPITest < Test::Unit::TestCase
     assert_equal 0, joined.start_offset
     assert_equal 10, joined.length
 
-    e = assert_raises RuntimeError do
+    e = assert_rais RuntimeError do
       arg.location.join(recv.location)
     end
     assert_equal "Incompatible locations", e.message
@@ -47,12 +47,12 @@ class YARPRubyAPITest < Test::Unit::TestCase
     other_recv, other_args_node, _ = parse_expression("1234 + 567").child_nodes
     other_arg = other_args_node.arguments[0]
 
-    e = assert_raises RuntimeError do
+    e = assert_rais RuntimeError do
       other_arg.location.join(recv.location)
     end
     assert_equal "Incompatible sources", e.message
 
-    e = assert_raises RuntimeError do
+    e = assert_rais RuntimeError do
       recv.location.join(other_arg.location)
     end
     assert_equal "Incompatible sources", e.message