diff --git a/dao/src/main/java/org/thingsboard/server/dao/resource/BaseImageService.java b/dao/src/main/java/org/thingsboard/server/dao/resource/BaseImageService.java
index 32bbd4ab6f..fd137b5b53 100644
--- a/dao/src/main/java/org/thingsboard/server/dao/resource/BaseImageService.java
+++ b/dao/src/main/java/org/thingsboard/server/dao/resource/BaseImageService.java
@@ -205,7 +205,7 @@ public class BaseImageService extends BaseResourceService implements ImageServic
     }
 
     private String generatePublicResourceKey() {
-        return RandomStringUtils.randomAlphanumeric(35);
+        return RandomStringUtils.randomAlphanumeric(32);
     }
 
     @Override