diff --git a/forward_engineering/helpers/constraintsHelper.js b/forward_engineering/helpers/constraintsHelper.js
index 302a90a..2d957bd 100644
--- a/forward_engineering/helpers/constraintsHelper.js
+++ b/forward_engineering/helpers/constraintsHelper.js
@@ -66,7 +66,7 @@ module.exports = app => {
 
 		const cleaned = clean(_.omit(keyData, 'keyType', 'indexOption', 'columns'));
 
-		return !_.isEmpty(cleaned) || keyData.columns?.length > 1;
+		return !_.isEmpty(cleaned) || keyData.columns?.length > 0;
 	};
 
 	const adaptIndexOptions = indexOption => {