diff --git a/forward_engineering/ddlProvider/ddlHelpers/columnDefinitionHelpers/getColumnDefault.js b/forward_engineering/ddlProvider/ddlHelpers/columnDefinitionHelpers/getColumnDefault.js
index de6ccfa..9ba4ac5 100644
--- a/forward_engineering/ddlProvider/ddlHelpers/columnDefinitionHelpers/getColumnDefault.js
+++ b/forward_engineering/ddlProvider/ddlHelpers/columnDefinitionHelpers/getColumnDefault.js
@@ -85,7 +85,7 @@ const getColumnDefault = ({ type, default: defaultValue, defaultOnNull, generate
 		return `${generatedClause} AS (${expressionValue})`;
 	}
 
-	if (defaultValue || defaultValue === 0) {
+	if (defaultValue !== undefined && defaultValue !== null) {
 		const onNull = getOnNullClause({ onNull: defaultOnNull });
 
 		return ` DEFAULT${onNull} ${defaultValue}`;
diff --git a/forward_engineering/utils/assignTemplates.js b/forward_engineering/utils/assignTemplates.js
index 4b32a2a..faadeef 100644
--- a/forward_engineering/utils/assignTemplates.js
+++ b/forward_engineering/utils/assignTemplates.js
@@ -16,7 +16,11 @@ const assignTemplates = (str, templates) => {
 		const templateName = parseTemplate(item);
 
 		return result.replace(item, () => {
-			return templates[templateName] || templates[templateName] === 0 ? templates[templateName] : '';
+			const value = templates[templateName];
+			if (value === undefined || value === null) {
+				return '';
+			}
+			return value;
 		});
 	}, str);
 };