diff --git a/test/irb/command/test_custom_command.rb b/test/irb/command/test_custom_command.rb
index 6642d2b16..16800db2c 100644
--- a/test/irb/command/test_custom_command.rb
+++ b/test/irb/command/test_custom_command.rb
@@ -5,7 +5,7 @@
 
 module TestIRB
   class CustomCommandIntegrationTest < TestIRB::IntegrationTestCase
-    def test_command_regsitration_can_happen_after_irb_require
+    def test_command_registration_can_happen_after_irb_require
       write_ruby <<~RUBY
         require "irb"
         require "irb/command"
@@ -32,7 +32,7 @@ def execute(*)
       assert_include(output, "Hello from PrintCommand")
     end
 
-    def test_command_regsitration_accepts_string_too
+    def test_command_registration_accepts_string_too
       write_ruby <<~RUBY
         require "irb/command"
 
@@ -58,7 +58,7 @@ def execute(*)
       assert_include(output, "Hello from PrintCommand")
     end
 
-    def test_arguments_propogation
+    def test_arguments_propagation
       write_ruby <<~RUBY
         require "irb/command"