diff --git a/src/Components/Editor/Actions/ContainerOperations.ts b/src/Components/Editor/Actions/ContainerOperations.ts
index 00b5ba6..3e8525e 100644
--- a/src/Components/Editor/Actions/ContainerOperations.ts
+++ b/src/Components/Editor/Actions/ContainerOperations.ts
@@ -327,7 +327,7 @@ function AssignProperty(container: ContainerModel, key: string, value: string |
   function SetMargin(): void {
     // We need to detect change in order to apply transformation to the width and height
     // Knowing the current margin is not enough as we dont keep the original width and height
-    const oldMarginValue: number = (container.properties.margin as any)[key];
+    const oldMarginValue: number = (container.properties.margin as any)[key] ?? 0;
     const diff = Number(value) - oldMarginValue;
     switch (key) {
       case 'left':