diff --git a/src/main/java/xyz/mcutils/backend/controller/ServerController.java b/src/main/java/xyz/mcutils/backend/controller/ServerController.java
index 0e150b1..acc6aa0 100644
--- a/src/main/java/xyz/mcutils/backend/controller/ServerController.java
+++ b/src/main/java/xyz/mcutils/backend/controller/ServerController.java
@@ -43,7 +43,7 @@ public class ServerController {
 
     @ResponseBody
     @GetMapping(value = "/icon/{hostname}", produces = MediaType.IMAGE_PNG_VALUE)
-    public ResponseEntity<?> getServerIcon(
+    public ResponseEntity<byte[]> getServerIcon(
             @Parameter(description = "The hostname and port of the server", example = "aetheria.cc") @PathVariable String hostname,
             @Parameter(description = "Whether to download the image") @RequestParam(required = false, defaultValue = "false") boolean download) {
         String dispositionHeader = download ? "attachment; filename=%s.png" : "inline; filename=%s.png";
@@ -58,7 +58,7 @@ public class ServerController {
 
     @ResponseBody
     @GetMapping(value = "/{platform}/preview/{hostname}", produces = MediaType.IMAGE_PNG_VALUE)
-    public ResponseEntity<?> getServerPreview(
+    public ResponseEntity<byte[]> getServerPreview(
             @Parameter(description = "The platform of the server", example = "java") @PathVariable String platform,
             @Parameter(description = "The hostname and port of the server", example = "aetheria.cc") @PathVariable String hostname,
             @Parameter(description = "Whether to download the image") @RequestParam(required = false, defaultValue = "false") boolean download,