diff --git a/lib/mutant/cli.rb b/lib/mutant/cli.rb
index 9007d6d4..1f7b64c7 100644
--- a/lib/mutant/cli.rb
+++ b/lib/mutant/cli.rb
@@ -79,7 +79,7 @@ module Mutant
 
     # Parse matchers
     #
-    # @param [Array<String>] patterns
+    # @param [Array<String>] expressions
     #
     # @return [undefined]
     #
diff --git a/lib/mutant/matcher/methods.rb b/lib/mutant/matcher/methods.rb
index 0b21ab1c..18e90bb1 100644
--- a/lib/mutant/matcher/methods.rb
+++ b/lib/mutant/matcher/methods.rb
@@ -63,8 +63,6 @@ module Mutant
 
       # Return candidate names
       #
-      # @param [Object] object
-      #
       # @return [Enumerable<Symbol>]
       #
       # @api private
diff --git a/lib/mutant/mutator/node/begin.rb b/lib/mutant/mutator/node/begin.rb
index e280723a..c69dbc74 100644
--- a/lib/mutant/mutator/node/begin.rb
+++ b/lib/mutant/mutator/node/begin.rb
@@ -27,7 +27,7 @@ module Mutant
 
         # Emit child subset
         #
-        # @param [Array<Parser::AST::Node>] nodes
+        # @param [Array<Parser::AST::Node>] children
         #
         # @return [undefined]
         #
diff --git a/lib/mutant/runner.rb b/lib/mutant/runner.rb
index 82c0faad..91f98a9a 100644
--- a/lib/mutant/runner.rb
+++ b/lib/mutant/runner.rb
@@ -118,7 +118,6 @@ module Mutant
     # Run mutation
     #
     # @param [Mutation] mutation
-    # @param [Fixnum] index
     #
     # @return [Report::Mutation]
     #