diff --git a/papaparse.js b/papaparse.js
index 91de82f..df7ba06 100755
--- a/papaparse.js
+++ b/papaparse.js
@@ -1403,8 +1403,7 @@ License: MIT
 		var preview = config.preview;
 		var fastMode = config.fastMode;
 		var quoteChar;
-		/** Allows for no quoteChar by setting quoteChar to undefined in config */
-		if (config.quoteChar === undefined) {
+		if (config.quoteChar === undefined || config.quoteChar === null) {
 			quoteChar = '"';
 		} else {
 			quoteChar = config.quoteChar;