diff --git a/js/creator-23.js b/js/creator-23.js
index be8d3bb0..65c1d548 100644
--- a/js/creator-23.js
+++ b/js/creator-23.js
@@ -1945,6 +1945,7 @@ function saveCard(saveFromFile) {
 		cardKey = prompt('Enter the name you would like to save your card under:', cardKey);
 		if (!cardKey) {return null;}
 	}
+	cardKey = cardKey.trim();
 	if (cardKeys.includes(cardKey)) {
 		if (!confirm('Would you like to overwrite your card previously saved as "' + cardKey + '"?\n(Clicking "cancel" will affix a version number)')) {
 			var originalCardKey = cardKey;