diff --git a/prism_compile.c b/prism_compile.c
index be9be37411..4bcbeb1208 100644
--- a/prism_compile.c
+++ b/prism_compile.c
@@ -2710,6 +2710,8 @@ pm_compile_defined_expr0(rb_iseq_t *iseq, const pm_node_t *node, LINK_ANCHOR *co
       case PM_CLASS_VARIABLE_AND_WRITE_NODE:
       case PM_CLASS_VARIABLE_OR_WRITE_NODE:
 
+      case PM_INDEX_AND_WRITE_NODE:
+
       case PM_INSTANCE_VARIABLE_WRITE_NODE:
       case PM_INSTANCE_VARIABLE_OPERATOR_WRITE_NODE:
       case PM_INSTANCE_VARIABLE_AND_WRITE_NODE:
diff --git a/test/ruby/test_compile_prism.rb b/test/ruby/test_compile_prism.rb
index 5e6b43d25a..d64cef57d8 100644
--- a/test/ruby/test_compile_prism.rb
+++ b/test/ruby/test_compile_prism.rb
@@ -245,6 +245,7 @@ module Prism
       assert_prism_eval("defined?(Prism::CPOWN += 1)")
       assert_prism_eval("defined?(Prism::CPOrWN ||= 1)")
       assert_prism_eval("defined?(Prism::CPWN = 1)")
+      assert_prism_eval("defined?([0][0] &&= 1)")
     end
 
     def test_GlobalVariableReadNode