diff --git a/QuestPDF/Infrastructure/TextStyleManager.cs b/QuestPDF/Infrastructure/TextStyleManager.cs
index 9e46a73..0d30c84 100644
--- a/QuestPDF/Infrastructure/TextStyleManager.cs
+++ b/QuestPDF/Infrastructure/TextStyleManager.cs
@@ -32,6 +32,9 @@ namespace QuestPDF.Infrastructure
 
         private static TextStyle MutateStyle(TextStyle origin, TextStyleProperty property, object value, bool overrideValue = true)
         {
+            if (overrideValue && value == null)
+                return origin;
+            
             if (property == TextStyleProperty.Color)
             {
                 if (!overrideValue && origin.Color != null)