diff --git a/forward_engineering/helpers/columnDefinitionHelper.js b/forward_engineering/helpers/columnDefinitionHelper.js
index b2179e9..1d1bdac 100644
--- a/forward_engineering/helpers/columnDefinitionHelper.js
+++ b/forward_engineering/helpers/columnDefinitionHelper.js
@@ -55,18 +55,13 @@ module.exports = app => {
 	const hasValue = value => value !== '' && value !== null && value !== undefined;
 
 	const getIdentity = identity => {
-		if (!identity) {
+		if (!identity || !(hasValue(identity.seed) && hasValue(identity.step))) {
 			return '';
 		}
 
 		const prefix = identity.generateIdentity === 'by default' ? 'GENERATED BY DEFAULT AS IDENTITY' : 'IDENTITY';
-
-		if (!hasValue(identity.seed) && !hasValue(identity.step)) {
-			return ` ${prefix}`;
-		}
-
-		const seed = Number(identity.seed || 0);
-		const step = Number(identity.step || 1);
+		const seed = Number(identity.seed);
+		const step = Number(identity.step);
 
 		return ` ${prefix}(${seed}, ${step})`;
 	};