diff --git a/apps/documenteditor/main/app/view/WatermarkSettingsDialog.js b/apps/documenteditor/main/app/view/WatermarkSettingsDialog.js
index b38825d16..e20f56622 100644
--- a/apps/documenteditor/main/app/view/WatermarkSettingsDialog.js
+++ b/apps/documenteditor/main/app/view/WatermarkSettingsDialog.js
@@ -638,7 +638,7 @@ define(['text!documenteditor/main/app/template/WatermarkSettings.template',
 
                 val = props.get_TextPr() || new Asc.CTextProp();
                 if (val) {
-                    val.put_FontSize(this.cmbFontSize.getValue());
+                    val.put_FontSize(Math.min(this.cmbFontSize.getValue(), 1638));
                     var font = new AscCommon.asc_CTextFontFamily();
                     font.put_Name(this.fontName);
                     font.put_Index(-1);