diff --git a/forward_engineering/helpers/columnDefinitionHelper.js b/forward_engineering/helpers/columnDefinitionHelper.js
index a71af0b..41b1819 100644
--- a/forward_engineering/helpers/columnDefinitionHelper.js
+++ b/forward_engineering/helpers/columnDefinitionHelper.js
@@ -75,7 +75,7 @@ module.exports = wrap => {
 
 	const decorateDefault = (type, defaultValue) => {
 		const defaultValuesRegExp =
-			/^(null|current_timestamp(\(\d+\))?)(\s+on\s+update\s+current_timestamp(\(\d+\))?)?$/i;
+			/^(null|current_timestamp(\(\d+\))?|'[^']*')(\s+on\s+update\s+current_timestamp(\(\d+\))?)?$/i;
 		if ((isString(type) || isDateTime(type)) && !defaultValuesRegExp.test(_.trim(defaultValue))) {
 			return wrap(escapeQuotes(defaultValue));
 		} else {