diff --git a/src/main/java/info/magnolia/dam/asset/field/DamFilePreviewComponent.java b/src/main/java/info/magnolia/dam/asset/field/DamFilePreviewComponent.java
index c9f4336..0444177 100644
--- a/src/main/java/info/magnolia/dam/asset/field/DamFilePreviewComponent.java
+++ b/src/main/java/info/magnolia/dam/asset/field/DamFilePreviewComponent.java
@@ -160,7 +160,11 @@ public class DamFilePreviewComponent extends AbstractContentPreviewComponent<Ass
     private File createAssetFile() {
         File tempFile = null;
         try {
-            tempFile = File.createTempFile(currentAsset.getFileName(), "." + currentAsset.getFileExtension());
+            String fileName = currentAsset.getFileName();
+            if (fileName.length() < 4) {
+                fileName = "xx" + fileName;
+            }
+            tempFile = File.createTempFile(fileName, "." + currentAsset.getFileExtension());
             tempFile.deleteOnExit();
             FileOutputStream fos = new FileOutputStream(tempFile);
             IOUtils.copyLarge(currentAsset.getContentStream(), fos);