diff --git a/gp-ecommerce-fields/gpecf-set-discount-amount-by-field-value.php b/gp-ecommerce-fields/gpecf-set-discount-amount-by-field-value.php
index 8cc709162..24fdb6dc5 100644
--- a/gp-ecommerce-fields/gpecf-set-discount-amount-by-field-value.php
+++ b/gp-ecommerce-fields/gpecf-set-discount-amount-by-field-value.php
@@ -105,6 +105,9 @@ public function output_script() {
 					};
 
 					self.setDiscountAmount = function( value ) {
+						// Clean the value to remove the thousand separator (could be , or . depending on currency settings).
+						value = gformCleanNumber( value, '', '', window.gf_global.gf_currency_config.decimal_separator );
+
 						if ( value.indexOf( '|' ) !== -1 ) {
 							value = value.split( '|' )[0];
 						}