diff --git a/app/core/src/main/java/stirling/software/SPDF/controller/api/misc/StampController.java b/app/core/src/main/java/stirling/software/SPDF/controller/api/misc/StampController.java
index 31afeba68..0df77bca7 100644
--- a/app/core/src/main/java/stirling/software/SPDF/controller/api/misc/StampController.java
+++ b/app/core/src/main/java/stirling/software/SPDF/controller/api/misc/StampController.java
@@ -71,6 +71,9 @@ public class StampController {
         String stampText = request.getStampText();
         MultipartFile stampImage = request.getStampImage();
         if ("image".equalsIgnoreCase(stampType)) {
+            if (stampImage == null) {
+                throw new IllegalArgumentException("Stamp image file must be provided when stamp type is 'image'");
+            }
             String stampImageName = stampImage.getOriginalFilename();
             if (stampImageName == null || stampImageName.contains("..") || stampImageName.startsWith("/")) {
                 throw new IllegalArgumentException("Invalid stamp image file path");