diff --git a/lib/graphql/language/parser.rb b/lib/graphql/language/parser.rb
index d79c9d15cf..f4c1c5adcc 100644
--- a/lib/graphql/language/parser.rb
+++ b/lib/graphql/language/parser.rb
@@ -33,11 +33,11 @@ class Parser < Parslet::Parser
       selections.as(:selections)
     }
 
-    rule(:operation_definition) { (unnamed_selections | named_operation_definition) }
+    rule(:operation_definition) { (unnamed_selections | typed_operation_definition) }
     rule(:unnamed_selections) { selections.as(:unnamed_selections)}
-    rule(:named_operation_definition) {
+    rule(:typed_operation_definition) {
       operation_type.as(:operation_type) >> space? >>
-      name.as(:name) >> space? >>
+      name.as(:name).maybe >> space? >>
       operation_variable_definitions.maybe.as(:optional_variables).as(:variables) >> space? >>
       directives.maybe.as(:optional_directives).as(:directives) >> space? >>
       selections.as(:selections)
diff --git a/spec/graphql/language/parser_spec.rb b/spec/graphql/language/parser_spec.rb
index 31b4887b5b..de01030224 100644
--- a/spec/graphql/language/parser_spec.rb
+++ b/spec/graphql/language/parser_spec.rb
@@ -43,6 +43,7 @@
     assert(parser.operation_definition.parse_with_debug(%|query personStuff {id, name, ...people, ... stuff}|), "named fetch")
     assert(parser.operation_definition.parse_with_debug(%|query personStuff @flagDirective {id, name, ...people}|), "with a directive")
     assert(parser.operation_definition.parse_with_debug(%|mutation changeStuff($stuff: Int = 1, $things: [SomeType]!) {id, name, ...people}|), "mutation with arguments")
+    assert(parser.operation_definition.parse_with_debug(%|mutation { id }|), "unnamed")
   end
 
   it 'parses fragment definitions' do