diff --git a/src/node_options-inl.h b/src/node_options-inl.h
index 5eddc400e3f99a..7facb22afc3c9b 100644
--- a/src/node_options-inl.h
+++ b/src/node_options-inl.h
@@ -188,7 +188,8 @@ auto OptionsParser<Options>::Convert(
   return OptionInfo{original.type,
                     Convert(original.field, get_child),
                     original.env_setting,
-                    original.help_text};
+                    original.help_text,
+                    original.default_is_true};
 }
 
 template <typename Options>
@@ -402,6 +403,13 @@ void OptionsParser<Options>::Parse(
     }
 
     const OptionInfo& info = it->second;
+
+    // Some V8 options can be negated and they are validated by V8 later.
+    if (is_negation && info.type != kBoolean && info.type != kV8Option) {
+      errors->push_back(NegationImpliesBooleanError(arg));
+      break;
+    }
+
     std::string value;
     if (info.type != kBoolean && info.type != kNoOp && info.type != kV8Option) {
       if (equals_index != std::string::npos) {
@@ -428,11 +436,6 @@ void OptionsParser<Options>::Parse(
       }
     }
 
-    // Some V8 options can be negated and they are validated by V8 later.
-    if (is_negation && info.type != kBoolean && info.type != kV8Option) {
-      errors->push_back(NegationImpliesBooleanError(arg));
-    }
-
     switch (info.type) {
       case kBoolean:
         *Lookup<bool>(info.field, options) = !is_negation;