diff --git a/assets/js/admin/woocommerce_admin.js b/assets/js/admin/woocommerce_admin.js
index f9e88587d00..c4a2b09e6c1 100644
--- a/assets/js/admin/woocommerce_admin.js
+++ b/assets/js/admin/woocommerce_admin.js
@@ -78,22 +78,32 @@
 			})
 
 			.on( 'keyup', '.wc_input_price[type=text], .wc_input_decimal[type=text], .wc_input_country_iso[type=text], .wc-order-totals #refund_amount[type=text]', function() {
-				var regex, error;
+				var regex, error, decimalRegex;
+				var checkDecimalNumbers = false;
 
 				if ( $( this ).is( '.wc_input_price' ) || $( this ).is( '#refund_amount' ) ) {
+					checkDecimalNumbers = true;
 					regex = new RegExp( '[^\-0-9\%\\' + woocommerce_admin.mon_decimal_point + ']+', 'gi' );
+					decimalRegex = new RegExp( '[^\\' + woocommerce_admin.mon_decimal_point + ']', 'gi' );
 					error = 'i18n_mon_decimal_error';
 				} else if ( $( this ).is( '.wc_input_country_iso' ) ) {
 					regex = new RegExp( '([^A-Z])+|(.){3,}', 'im' );
 					error = 'i18n_country_iso_error';
 				} else {
+					checkDecimalNumbers = true;
 					regex = new RegExp( '[^\-0-9\%\\' + woocommerce_admin.decimal_point + ']+', 'gi' );
+					decimalRegex = new RegExp( '[^\\' + woocommerce_admin.decimal_point + ']', 'gi' );
 					error = 'i18n_decimal_error';
 				}
 
 				var value    = $( this ).val();
 				var newvalue = value.replace( regex, '' );
 
+				// Check if newvalue have more than one decimal point.
+				if ( checkDecimalNumbers && 1 < newvalue.replace( decimalRegex, '' ).length ) {
+					newvalue = newvalue.replace( decimalRegex, '' );
+				}
+
 				if ( value !== newvalue ) {
 					$( document.body ).triggerHandler( 'wc_add_error_tip', [ $( this ), error ] );
 				} else {
diff --git a/includes/admin/class-wc-admin-assets.php b/includes/admin/class-wc-admin-assets.php
index 8a5c7b7f955..34defe99fc6 100644
--- a/includes/admin/class-wc-admin-assets.php
+++ b/includes/admin/class-wc-admin-assets.php
@@ -169,9 +169,9 @@ if ( ! class_exists( 'WC_Admin_Assets', false ) ) :
 
 				$params = array(
 					/* translators: %s: decimal */
-					'i18n_decimal_error'                => sprintf( __( 'Please enter in decimal (%s) format without thousand separators.', 'woocommerce' ), $decimal ),
+					'i18n_decimal_error'                => sprintf( __( 'Please enter with one decimal point (%s) without thousand separators.', 'woocommerce' ), $decimal ),
 					/* translators: %s: price decimal separator */
-					'i18n_mon_decimal_error'            => sprintf( __( 'Please enter in monetary decimal (%s) format without thousand separators and currency symbols.', 'woocommerce' ), wc_get_price_decimal_separator() ),
+					'i18n_mon_decimal_error'            => sprintf( __( 'Please enter with one monetary decimal point (%s) without thousand separators and currency symbols.', 'woocommerce' ), wc_get_price_decimal_separator() ),
 					'i18n_country_iso_error'            => __( 'Please enter in country code with two capital letters.', 'woocommerce' ),
 					'i18n_sale_less_than_regular_error' => __( 'Please enter in a value less than the regular price.', 'woocommerce' ),
 					'i18n_delete_product_notice'        => __( 'This product has produced sales and may be linked to existing orders. Are you sure you want to delete it?', 'woocommerce' ),